15 Best A-Tech DDR4 RAMS for Server, Compared
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
Finding the best a tech ddr4 RAMs for server environments requires matching specific form factors and speeds to your hardware. We compared 15 options based strictly on published specifications. The A-Tech 32GB DDR4 2400MHz ECC LRDIMM leads as the best overall pick because its 2Rx4 design ensures direct compatibility with Dell PowerEdge R630 systems. This list covers LRDIMM, RDIMM, and UDIMM variants for various server needs. Use these spec-focused comparisons to decide which memory module fits your server's requirements.
Quick picks
The best fit for you
- You need a 32GB LRDIMM for Dell PowerEdge R630 A-Tech 32GB DDR4 2400MHz ECC LRDIMM Its 2Rx4 2400MHz LRDIMM form factor fits Dell PowerEdge R630 configurations requiring load-reduced memory.
- You require high-density 128GB LRDIMM for ASRock Rack ROMED8-2T A-Tech 128GB (2x64GB) DDR4 2133MHz ECC LRDIMM This 2x64GB 2133MHz quad-rank kit provides the specific capacity and speed for ASRock Rack ROMED8-2T builds.
- You need a single 32GB unbuffered ECC module A-Tech 32GB DDR4 3200MHz ECC UDIMM It delivers 3200MHz throughput in a single 32GB UDIMM stick for servers needing unbuffered ECC.
Our 15 picks
A-Tech 32GB DDR4 2400MHz ECC LRDIMM
Best for: Dell PowerEdge R630 load-reduced memory upgrades
- Compatible Device
- Server (what this guide is about)
- Total Capacity
- 32GB
- Memory Speed
- 2400MHz
- Voltage
- 1.2v
- Module Configuration
- 1x32GB
- Form Factor
- LRDIMM
This single 32GB server memory module gives you a DDR4 upgrade running at 2400MHz and 1.2 volts. Built as a 288-pin dual-rank (2Rx4) load-reduced DIMM, it matches systems needing ECC LRDIMM architecture like the Dell PowerEdge R630. It suits you if you need to replace part number SNP7FKKKC/32G or expand an existing load-reduced server pool.
Pros
- 288-pin load-reduced ECC LRDIMM design
- Operates at standard 1.2V DDR4 power
- Direct replacement for Dell part SNP7FKKKC/32G
- Includes manufacturer lifetime warranty
Cons
- Clock speed tops out at 2400MHz
- Cannot mix with standard RDIMM or unbuffered modules
- Single-module pack rather than a matched multi-stick kit
Good fit if
- You run a Dell PowerEdge R630 server using 2400MHz LRDIMMs.
- You need a direct replacement for Dell part SNP7FKKKC/32G.
- You already operate an ECC load-reduced memory configuration.
Skip if
- You use standard ECC registered (RDIMM) or unbuffered memory.
- You require faster DDR4 bus speeds such as 2933MHz or 3200MHz.
- You need a multi-module kit to populate several channels at once.
Verdict: A-Tech 32GB DDR4 2400MHz ECC LRDIMM fits Dell PowerEdge R630 administrators seeking a 1.2V load-reduced replacement module for part SNP7FKKKC/32G. Its 2Rx4 design drops directly into servers configured for 2400MHz ECC LRDIMMs.
A-Tech 32GB DDR4 2400MHz ECC RDIMM
Best for: 2400MHz server and workstation memory expansion
- Compatible Device
- Server (what this guide is about)
- Total Capacity
- 32GB
- Memory Speed
- 2400MHz
- Voltage
- 1.2V
- Module Configuration
- 1x32GB
- Form Factor
- RDIMM
This single 32GB module provides DDR4 server memory operating at 2400MHz on 1.2 volts. Built as a 288-pin ECC registered RDIMM with a dual-rank 2Rx4 configuration, it delivers error correction for enterprise system workloads. You get dependable hardware capacity if your server or workstation motherboard requires registered DDR4 memory without higher frequency demands.
Pros
- 32GB capacity on a single 288-pin module
- Dual-rank 2Rx4 registered RDIMM architecture
- Standard 1.2V operating voltage
- Limited lifetime warranty coverage
Cons
- 2400MHz transfer speed is lower than 2666MHz or 3200MHz DDR4 alternatives
- Incompatible with ECC unbuffered, LRDIMM, or non-ECC memory configurations
- Single-module packaging requires separate purchases for multi-channel arrays
Good fit if
- You need a single 32GB 2Rx4 ECC RDIMM to expand an existing server bank.
- You maintain hardware designed for 2400MHz DDR4 registered memory at 1.2V.
Skip if
- You use a desktop PC, laptop, or system requiring unbuffered memory.
- You need faster throughput matching 2933MHz or 3200MHz bus speeds.
Verdict: A-Tech 32GB DDR4 2400MHz ECC RDIMM serves system administrators who need a 1.2V dual-rank module to expand DDR4 server capacity at baseline 2400MHz speeds.
A-Tech 128GB (2x64GB) DDR4 2933MHz ECC LRDIMM
Best for: high-density DDR4 load-reduced server memory upgrades
- Compatible Device
- Server (what this guide is about)
- Total Capacity
- 128GB
- Memory Speed
- 2933MHz
- Voltage
- 1.2V
- Module Configuration
- 2x64GB
- Form Factor
- LRDIMM
View on Amazon: A-Tech 128GB (2x64GB) DDR4 2933MHz ECC LRDIMM
This memory package provides 128GB of server memory through two 64GB DDR4 modules operating at 2933MHz. Built as 4Rx4 quad-rank load-reduced DIMMs running at standard 1.2V, the kit targets systems requiring dense capacity and reduced bus loading. You can use it to expand compatible server hardware, provided you do not mix it with standard registered or unbuffered modules.
Pros
- 128GB total capacity split across two 64GB modules
- 2933MHz PC4-23400 operating speed at 1.2V standard voltage
- Load-reduced (LRDIMM) 4Rx4 quad-rank architecture
- Backed by a limited lifetime warranty
Cons
- Incompatible with desktop PCs, laptops, and unbuffered memory slots
- Cannot be mixed with ECC Registered (RDIMM) or ECC Unbuffered modules
- Operates at 2933MHz rather than DDR4 peak 3200MHz speeds
Good fit if
- You need 128GB of high-density load-reduced memory across two server slots.
- You manage a server platform that explicitly supports 2933MHz DDR4 LRDIMMs.
Skip if
- You use standard desktop, laptop, or workstation motherboards requiring unbuffered RAM.
- You have existing ECC Registered (RDIMM) modules installed that cannot be mixed with LRDIMMs.
Verdict: A-Tech 128GB (2x64GB) DDR4 2933MHz ECC LRDIMM Kit provides high-density memory expansion for enterprise administrators running compatible load-reduced server platforms.
A-Tech 128GB DDR4 LRDIMM
Best for: Dell PowerEdge servers needing 128GB capacity
- Compatible Device
- Server (what this guide is about)
- Total Capacity
- 128GB
- Memory Speed
- 2666MHz
- Voltage
- 1.2V
- Module Configuration
- 2x64GB
- Form Factor
- DIMM
This A-Tech kit provides 128GB of DDR4 memory using two 64GB modules. It uses ECC LRDIMM technology running at 2666MHz. The modules operate at 1.2V and feature a 4Rx4 rank configuration. You should choose this kit if you need high capacity for Dell PowerEdge servers like the R440 or R640. It supports Intel Xeon Scalable processors for demanding server workloads.
Pros
- 128GB total capacity from two 64GB modules
- ECC LRDIMM technology for server reliability
- 2666MHz speed with 1.2V voltage
- Compatible with 1st and 2nd Gen Intel Xeon Scalable CPUs
- Specific fit for Dell PowerEdge R440, R640, and R740 models
Cons
- LRDIMM modules are slower than RDIMM options at 2666MHz
- Higher latency inherent to Load Reduced DIMM architecture
- Limited to specific Dell PowerEdge server generations
Good fit if
- You need 128GB of RAM for a Dell PowerEdge server
- You use Intel Xeon Scalable processors in your setup
- You require ECC LRDIMM memory for large datasets
Skip if
- You are using a non-Dell PowerEdge server
- You need higher speeds than 2666MHz
- You prefer RDIMM modules over LRDIMM
Verdict: A-Tech 128GB DDR4 LRDIMM Kit delivers necessary capacity for Dell PowerEdge R440 and R640 servers using Intel Xeon Scalable processors. It suits administrators who need large memory pools for virtualization or database workloads.
A-Tech 16GB DDR4 2400MHz ECC UDIMM
Best for: servers requiring single 16GB unbuffered ECC modules
- Compatible Device
- Server (what this guide is about)
- Total Capacity
- 16GB
- Memory Speed
- 2400MHz
- Module Configuration
- 1x16GB
- ECC Support
- ECC Unbuffered
- Form Factor
- UDIMM
This single-module memory upgrade provides you with 16GB of DDR4 capacity running at 2400MHz. Built in a 288-pin UDIMM form factor, it features ECC unbuffered architecture for server error checking. It suits you if you maintain a server motherboard that requires unbuffered ECC modules rather than registered DIMMs and only need a single 16GB stick.
Pros
- 16GB single-module DDR4 capacity
- ECC unbuffered support for memory error handling
- Standard 288-pin UDIMM form factor
- Operates at PC4-19200 (2400MHz)
Cons
- Lower 16GB capacity compared to 32GB and 128GB options on the list
- 2400MHz clock speed is slower than 2666MHz and 3200MHz alternatives
- Unbuffered UDIMM design cannot mix with registered RDIMMs or LRDIMMs
Good fit if
- You need a single 16GB DDR4 replacement module for an ECC UDIMM server.
- You run a motherboard configured for 2400MHz PC4-19200 memory speed.
- You are replacing a Hynix HMA82GU7AFR8N-UH stick.
Skip if
- You require higher capacity per slot, such as 32GB or 64GB modules.
- You have a server platform that strictly requires registered RDIMMs or LRDIMMs.
- You want faster DDR4 transfer speeds such as 2666MHz or 3200MHz.
Verdict: A-Tech 16GB DDR4 2400MHz ECC UDIMM delivers standard-speed unbuffered ECC memory for servers configured for 2400MHz modules. It fits system administrators replacing an individual 16GB unbuffered stick in small-scale servers.
A-Tech 16GB DDR4 2666MHz ECC UDIMM
Best for: 2666MHz unbuffered ECC server memory upgrades
- Compatible Device
- Server (what this guide is about)
- Total Capacity
- 16GB
- Memory Speed
- 2666 MHz
- Voltage
- 1.2V
- Module Configuration
- 1x16GB
- Form Factor
- UDIMM
This A-Tech server memory upgrade provides a single 16GB DDR4 module rated at 2666MHz. It runs at the standard 1.2V DDR4 operating voltage and uses a 288-pin ECC unbuffered UDIMM form factor with a 2Rx8 dual-rank design. You will find it suits small servers or workstations requiring unbuffered ECC memory rather than registered RDIMMs.
Pros
- DDR4 2666MHz (PC4-21300) operating speed
- ECC unbuffered (UDIMM) architecture
- Dual-rank 2Rx8 layout
- Standard 1.2V power requirement
Cons
- Single 16GB module offers less capacity than 32GB alternatives
- Incompatible with server boards requiring registered RDIMMs or LRDIMMs
Good fit if
- You need a 16GB 2666MHz module for an ECC unbuffered slot
- You run a server board designed strictly for 288-pin UDIMMs
- You are replacing an existing Hynix HMA82GU7CJR8N-VK stick
Skip if
- You need registered RDIMM or load-reduced LRDIMM server memory
- You need 32GB or larger density per slot
Verdict: A-Tech 16GB DDR4 2666MHz ECC UDIMM fits server operators who need standard-voltage unbuffered ECC memory to match 2666MHz system specifications. It delivers direct hardware compatibility for platforms designed for single 16GB 2Rx8 UDIMMs.
A-Tech 32GB DDR4 3200MHz ECC RDIMM
Best for: Samsung M393A4K40EB3-CWE server memory replacements
- Compatible Device
- Server (what this guide is about)
- Total Capacity
- 32GB
- Memory Speed
- 3200 MHz
- Voltage
- 1.2V
- Module Configuration
- 1x32GB
- Form Factor
- RDIMM
This A-Tech server memory module gives you 32GB of DDR4 capacity running at 3200MHz. It uses a 288-pin RDIMM form factor with dual-rank 2Rx4 architecture and standard 1.2V operation. You will find it matches systems needing registered ECC memory, making it suitable if you want to replace Samsung M393A4K40EB3-CWE modules or expand an existing server.
Pros
- DDR4 3200MHz memory speed (PC4-25600)
- ECC Registered (RDIMM) architecture for data integrity
- Dual-rank 2Rx4 configuration
- Standard 1.2V operating voltage
Cons
- Single 32GB module rather than a multi-DIMM kit
- Requires a server board that supports registered RDIMM memory
Good fit if
- You need a single 32GB DDR4 3200MHz ECC registered module for your server.
- You want a direct replacement for a Samsung M393A4K40EB3-CWE stick.
Skip if
- You run a standard desktop system that requires unbuffered DIMMs.
- You need a matched multi-module memory kit in a single package.
Verdict: A-Tech 32GB DDR4 3200MHz ECC RDIMM delivers fast 3200MHz registered memory for server platforms requiring 288-pin 2Rx4 modules. It fits system administrators looking to match or replace existing Samsung M393A4K40EB3-CWE components.
A-Tech 32GB DDR4 3200MHz ECC RDIMM
Best for: single-module 3200MHz server memory replacements
- Compatible Device
- Server (what this guide is about)
- Total Capacity
- 32GB
- Memory Speed
- 3200 MHz
- Voltage
- 1.2V
- Module Configuration
- 1x32GB
- Form Factor
- RDIMM
This A-Tech 32GB server memory module gives you a DDR4 operating speed of 3200MHz at standard 1.2V. Built as an ECC registered 288-pin RDIMM with a 2Rx4 dual-rank configuration, it targets server platforms requiring error correction. It suits you if you need a single 32GB module to expand capacity or replace a matching component in an enterprise environment.
Pros
- Operates at DDR4 3200MHz (PC4-25600) speed
- Uses ECC registered architecture for server stability
- Dual-rank 2Rx4 configuration at standard 1.2V
Cons
- Supplied as a single 32GB module rather than a multi-stick kit
- Specific CAS latency timings are not stated in the published data
- RDIMM format will not work in standard desktop systems
Good fit if
- You need a single 32GB DDR4 3200MHz registered module for a server.
- You want an exact spec match for a Samsung M393A4K40DB3-CWE unit.
Skip if
- You require an unbuffered UDIMM for desktop hardware.
- You need a matched multi-module kit to populate multi-channel memory setups.
Verdict: A-Tech 32GB DDR4 3200MHz ECC RDIMM provides dependable server memory for administrators needing a dual-rank 1.2V replacement. It fits servers designed for 288-pin registered DDR4 modules running at 3200MHz.
A-Tech 32GB DDR4 3200MHz ECC RDIMM
Best for: single-module 3200MHz server memory replacements
- Compatible Device
- Server (what this guide is about)
- Total Capacity
- 32GB
- Memory Speed
- 3200 MHz
- Voltage
- 1.2V
- Module Configuration
- 1x32GB
- Form Factor
- RDIMM
This single-module server upgrade provides 32GB of DDR4 memory running at 3200MHz. It uses a 288-pin ECC registered RDIMM design with a 2Rx8 dual-rank configuration and operates at 1.2 volts. If your server board requires registered ECC memory to avoid data corruption and matches these speed ratings, this module gives you a direct replacement option.
Pros
- DDR4 3200MHz operating speed (PC4-25600)
- ECC registered RDIMM form factor
- Standard 1.2V operating voltage
- Dual rank 2Rx8 architecture
Cons
- Single-module packaging rather than a multi-channel kit
- Dual-rank x8 layout incompatible with systems requiring x4 memory
Good fit if
- You need a single 32GB 3200MHz ECC registered RDIMM for your server.
- You are replacing a Samsung M393A4G43AB3-CWE module.
- Your motherboard requires standard 1.2V 288-pin DDR4 RDIMM modules.
Skip if
- You need unbuffered DIMMs (UDIMMs) or load-reduced memory (LRDIMMs).
- You need a matched multi-stick kit for balanced memory channels.
Verdict: A-Tech 32GB DDR4 3200MHz ECC RDIMM delivers 3200MHz speed and dual-rank error correction for servers built to run standard 1.2V registered modules.
A-Tech 128GB (2x64GB) DDR4 2133MHz ECC LRDIMM
Best for: ASRock Rack ROMED8-2T high-density server builds
- Compatible Device
- Server (what this guide is about)
- Total Capacity
- 128 GB
- Memory Speed
- 2133 MHz
- Voltage
- 1.2V
- Module Configuration
- 2x64GB
- Form Factor
- DIMM
View on Amazon: A-Tech 128GB (2x64GB) DDR4 2133MHz ECC LRDIMM
This memory kit gives you 128GB of server memory across two 64GB 288-pin modules. It operates at DDR4 2133MHz on standard 1.2V power. Featuring ECC load-reduced technology and a 4Rx4 quad-rank design, it targets systems requiring buffered capacity. It suits you if you run an ASRock Rack ROMED8-2T server needing certified LRDIMM density.
Pros
- 128GB total capacity provided in a two-module kit
- ECC load-reduced design lowers electrical load on the memory bus
- Operates at standard JEDEC DDR4 1.2V voltage
- Includes manufacturer limited lifetime warranty
Cons
- Clock speed is limited to 2133MHz
- Uses a 4Rx4 quad-rank structure that may limit channel configurations
Good fit if
- You run an ASRock Rack ROMED8-2T server board.
- You need 128GB of memory using only two DIMM slots.
Skip if
- You require memory speeds higher than 2133MHz.
- Your motherboard requires standard unbuffered memory or registered RDIMMs rather than LRDIMMs.
Verdict: A-Tech 128GB DDR4 2133MHz ECC LRDIMM Kit provides high-capacity quad-rank memory tailored specifically for ASRock Rack ROMED8-2T server deployments.
A-Tech 128GB DDR4 2400MHz LRDIMM
Best for: high-capacity Dell PowerEdge servers
- Compatible Device
- Server (what this guide is about)
- Total Capacity
- 128 GB
- Memory Speed
- 2400 MHz
- Voltage
- 1.2V
- Module Configuration
- 4x32GB
- Form Factor
- DIMM
This A-Tech kit provides 128 GB of server memory across four 32 GB modules. It runs at 2400 MHz with ECC Load Reduced technology. The 2Rx4 configuration and 1.2V standard voltage ensure stable operation for compatible Dell PowerEdge servers. You get reliable capacity expansion without needing specialized installation expertise. It is designed for systems requiring high memory density and error correction.
Pros
- 128 GB total capacity in a 4x32GB kit
- ECC Load Reduced (LRDIMM) technology for stability
- Compatible with multiple Dell PowerEdge server models
- Standard 1.2V DDR4 voltage
Cons
- 2400 MHz speed is lower than 2666 MHz or 3200 MHz options
- Requires four DIMM slots for full capacity
- LRDIMM type may not fit all server configurations
Good fit if
- You need maximum memory capacity for virtualization
- You use a Dell PowerEdge server requiring LRDIMMs
- You prioritize error correction for critical workloads
Skip if
- You require speeds above 2400 MHz
- Your server only supports RDIMM modules
- You have fewer than four available DIMM slots
Verdict: A-Tech 128GB 2400MHz LRDIMM Kit delivers high-density memory for Dell PowerEdge servers needing LRDIMM support. It suits administrators running memory-intensive virtual machines who require four available slots.
A-Tech 128GB (2x64GB) DDR4 2400MHz ECC LRDIMM Kit
Best for: ASUS ESC server memory upgrades
- Compatible Device
- Server (what this guide is about)
- Total Capacity
- 128 GB
- Memory Speed
- 2400 MHz
- Voltage
- 1.2V
- Module Configuration
- 2x64GB
- Form Factor
- DIMM
View on Amazon: A-Tech 128GB (2x64GB) DDR4 2400MHz ECC LRDIMM Kit
This memory kit provides 128GB of server memory across two 64GB 288-pin LRDIMM modules. It operates at 2400MHz using standard 1.2V DDR4 power and features a 4Rx4 quad-rank ECC load-reduced configuration. If you manage compatible ASUS ESC server platforms such as the ESC4000 or ESC8000 series, this pair expands your capacity without filling every slot.
Pros
- 128GB total capacity across two high-density 64GB modules
- ECC Load Reduced (LRDIMM) design with 4Rx4 rank configuration
- Operates at standard JEDEC 1.2V DDR4 voltage
- Covered by a limited lifetime warranty
Cons
- 2400MHz operating frequency is slower than 2933MHz or 3200MHz DDR4 options
- Listed compatibility is limited to select ASUS ESC server models
Good fit if
- You operate an ASUS ESC4000 G3, G3S, G4X, or ESC8000 G3 server.
- You need to add 128GB of RAM using only two DIMM slots.
Skip if
- You need higher DDR4 memory speeds such as 2933MHz or 3200MHz.
- You deploy servers using standard RDIMM memory that cannot mix with LRDIMMs.
Verdict: A-Tech 128GB (2x64GB) 2400MHz DDR4 LRDIMM Kit delivers dense memory expansion for administrators maintaining specific ASUS ESC server systems. It fits builds that require quad-rank load-reduced memory running at baseline 2400MHz speeds.
A-Tech 128GB (4x32GB) DDR4 2133MHz ECC LRDIMM
Best for: ASRock Rack ROMED8-2T multi-channel setups
- Compatible Device
- Server (what this guide is about)
- Total Capacity
- 128 GB
- Memory Speed
- 2133 MHz
- Voltage
- 1.2V
- Module Configuration
- 4x32GB
- Form Factor
- DIMM
View on Amazon: A-Tech 128GB (4x32GB) DDR4 2133MHz ECC LRDIMM
This memory kit provides 128GB of total server memory divided across four 32GB modules. It runs at DDR4 2133MHz using a 1.2V standard voltage and features a quad-rank 4Rx4 ECC load-reduced DIMM design. It suits you if you need to equip an ASRock Rack ROMED8-2T server build with multi-channel error-correcting memory.
Pros
- 128GB capacity spread across four 32GB modules
- ECC Load Reduced (LRDIMM) quad-rank 4Rx4 design
- Standard 1.2V DDR4 power specification
- Backed by a limited lifetime warranty
Cons
- 2133MHz operating frequency is slower than 2933MHz and 3200MHz alternatives
- Uses four DIMM slots rather than two to reach 128GB
- Compatibility specifically designated for ASRock Rack ROMED8-2T motherboards
Good fit if
- You run an ASRock Rack ROMED8-2T server platform.
- You require four matched ECC LRDIMM modules to fill memory channels.
- Your workload is configured for DDR4 2133MHz PC4-17000 operating speeds.
Skip if
- You need higher memory frequencies like 2933MHz or 3200MHz.
- You prefer 64GB DIMMs to save open slots for future expansion.
- Your server uses a motherboard other than the ASRock Rack ROMED8-2T.
Verdict: A-Tech 128GB (4x32GB) DDR4 2133MHz ECC LRDIMM Kit provides targeted quad-rank memory expansion for ASRock Rack ROMED8-2T systems. It serves administrators who need a 4-channel load-reduced memory configuration running at baseline 2133MHz speeds.
A-Tech 32GB DDR4 3200MHz ECC UDIMM
Best for: ECC UDIMM servers needing 3200MHz speed
- Compatible Device
- Server (what this guide is about)
- Total Capacity
- 32GB
- Memory Speed
- 3200MHz
- Voltage
- 1.2V
- Module Configuration
- 1x32GB
- Form Factor
- UDIMM
This A-Tech memory module gives you 32GB of DDR4 capacity on a single 288-pin ECC unbuffered DIMM. Running at 3200MHz on standard 1.2V power with a 2Rx8 dual-rank build, it delivers fast memory throughput for compatible server setups. You will find it suits systems configured specifically for unbuffered ECC memory rather than registered RDIMMs.
Pros
- 3200MHz memory speed (PC4-25600E)
- Dense 32GB capacity on a single module
- ECC unbuffered support for data integrity
- Standard 1.2V operating voltage
Cons
- Unbuffered ECC format is incompatible with RDIMM server sockets
- Single-stick module does not provide multi-channel operation out of the box
Good fit if
- You need a 32GB 3200MHz DDR4 module for an ECC UDIMM server socket.
- You are replacing an existing Hynix HMAA4GU7CJR8N-XN memory module.
Skip if
- You run a server board that requires registered RDIMMs or LRDIMMs.
- You want a matched multi-stick kit to fill several memory channels at once.
Verdict: A-Tech 32GB DDR4 3200MHz ECC UDIMM serves server administrators who need unbuffered ECC memory with 3200MHz throughput in a single 32GB stick. It directly fits motherboards requiring 1.2V 288-pin PC4-25600E memory.
A-Tech 32GB DDR4 3200MHz ECC RDIMM
Best for: replacing Samsung M393A4G43BB4-CWE server modules
- Compatible Device
- Server (what this guide is about)
- Total Capacity
- 32GB
- Memory Speed
- 3200MHz
- Voltage
- 1.2V
- Module Configuration
- 1x32GB
- Form Factor
- RDIMM
This A-Tech server module provides 32GB of DDR4 memory running at 3200MHz. It uses a 288-pin ECC registered RDIMM design with a dual-rank 2Rx8 configuration operating at standard 1.2V. You can install it as a direct replacement for servers requiring Samsung M393A4G43BB4-CWE modules to maintain system stability and expand memory capacity.
Pros
- DDR4 3200MHz operating frequency delivers fast data transfer for server workloads.
- ECC registered RDIMM build detects and corrects data errors during continuous uptime.
- Operates at standard DDR4 1.2V voltage to limit thermal output.
- Dual-rank 2Rx8 architecture provides 32GB density on a single 288-pin stick.
Cons
- Single-module packaging requires purchasing multiple units if you need multi-channel kits.
- 2Rx8 organization is incompatible with server motherboards requiring x4 chip layouts.
Good fit if
- You need a single 32GB DDR4 3200MHz ECC registered module for an open server slot.
- You are replacing an existing Samsung M393A4G43BB4-CWE module.
- Your server motherboard specifically supports 1.2V 288-pin 2Rx8 RDIMMs.
Skip if
- You run a server platform that requires load-reduced LRDIMMs or unbuffered ECC memory.
- You need a packaged multi-module kit to populate all memory channels at once.
Verdict: A-Tech 32GB DDR4 3200MHz ECC RDIMM suits server administrators looking to replace a Samsung M393A4G43BB4-CWE module or add high-frequency dual-rank ECC memory to compatible platforms.
Specifications side by side
| Spec | A-Tech 32GB DDR4 2400MHz ECC LRDIMM | A-Tech 32GB DDR4 2400MHz ECC RDIMM | A-Tech 128GB (2x64GB) DDR4 2933MHz ECC LRDIMM | A-Tech 128GB DDR4 LRDIMM | A-Tech 16GB DDR4 2400MHz ECC UDIMM | A-Tech 16GB DDR4 2666MHz ECC UDIMM | A-Tech 32GB DDR4 3200MHz ECC RDIMM | A-Tech 32GB DDR4 3200MHz ECC RDIMM | A-Tech 32GB DDR4 3200MHz ECC RDIMM | A-Tech 128GB (2x64GB) DDR4 2133MHz ECC LRDIMM | A-Tech 128GB DDR4 2400MHz LRDIMM | A-Tech 128GB (2x64GB) DDR4 2400MHz ECC LRDIMM Kit | A-Tech 128GB (4x32GB) DDR4 2133MHz ECC LRDIMM | A-Tech 32GB DDR4 3200MHz ECC UDIMM | A-Tech 32GB DDR4 3200MHz ECC RDIMM |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Total Capacity | 32GB | 32GB | 128GB | 128GB | 16GB | 16GB | 32GB | 32GB | 32GB | 128 GB | 128 GB | 128 GB | 128 GB | 32GB | 32GB |
| Memory Speed | 2400MHz | 2400MHz | 2933MHz | 2666MHz | 2400MHz | 2666 MHz | 3200 MHz | 3200 MHz | 3200 MHz | 2133 MHz | 2400 MHz | 2400 MHz | 2133 MHz | 3200MHz | 3200MHz |
| Voltage | 1.2v | 1.2V | 1.2V | 1.2V | not specified | 1.2V | 1.2V | 1.2V | 1.2V | 1.2V | 1.2V | 1.2V | 1.2V | 1.2V | 1.2V |
| Module Configuration | 1x32GB | 1x32GB | 2x64GB | 2x64GB | 1x16GB | 1x16GB | 1x32GB | 1x32GB | 1x32GB | 2x64GB | 4x32GB | 2x64GB | 4x32GB | 1x32GB | 1x32GB |
| Form Factor | LRDIMM | RDIMM | LRDIMM | DIMM | not specified | UDIMM | RDIMM | RDIMM | RDIMM | DIMM | DIMM | DIMM | DIMM | UDIMM | RDIMM |
| ECC Support | ECC Load Reduced | ECC Registered | ECC Load Reduced | ECC LRDIMM | ECC Unbuffered | ECC Unbuffered | ECC Registered | ECC Registered | ECC Registered | ECC Load Reduced | ECC Load Reduced | ECC Load Reduced | ECC Load Reduced | ECC | ECC |
| Compatible Device | Server | Server | Server | Server | Server | Server | Server | Server | Server | Server | Server | Server | Server | Server | Server |
| Size | 32GB 2400MHz (PC4-19200) 2Rx4 | 32GB | 2Rx4 | 64GB | 4DRx4 | 64GB 2666MHz (PC4-21300) LRDIMM | 16GB | 16GB | 32GB | 32GB | 32GB | 128 GB | 128 GB | 128 GB | 128 GB | 32GB | 32GB |
| Dimensions | not specified | 5.25 × 1.23 × 0.15 inches | 5.25 × 1.23 × 0.15 inches | not specified | not specified | 5.25 × 1.18 × 0.15 inches | 5.25 × 1.18 × 0.15 inches | 5.25 × 1.18 × 0.15 inches | 5.25 × 1.18 × 0.15 inches | 5.25 × 1.18 × 0.15 inches | 5.25 × 1.18 × 0.15 inches | 5.25 × 1.18 × 0.15 inches | 5.25 × 1.18 × 0.15 inches | 5.25 × 1.18 × 0.15 inches | 5.25 × 1.18 × 0.15 inches |
| Color | Server Module (1 x ECC LRDIMM) | 1 Module | 2 Module Kit | (64GB x 2 Modules) | 128GB Kit | not specified | not specified | not specified | not specified | not specified | Multicolor | Multicolor | Multicolor | Multicolor | Multicolor | Multicolor |
| Model | AT316640SRV-X1L1 | AT32G1D4D2400RD4N12V | AT64G2D4D2933LQ4N12V | not specified | HMA82GU7AFR8N-UH-ATC | ARS469 | ARS952 | ARS951 | ARS947 | ARW620 | ASQ179 | ASQ892 | ARX841 | HMAA4GU7CJR8N-XN-ATC | M393A4G43BB4-CWE-ATC |
When planning a build, you must match module specs with the best motherboards for server to ensure compatibility.
How to Choose the Right Server RAM
-
Verify Form Factor Compatibility
Your server motherboard dictates the physical memory type. LRDIMMs support higher capacities but add latency. RDIMMs offer registered stability for general workloads. UDIMMs are unbuffered and suited for smaller systems. Check your manual to ensure you buy the correct type. For example, the A-Tech 32GB DDR4 2400MHz ECC LRDIMM fits Dell PowerEdge R630 systems requiring load-reduced modules. Mismatching the form factor prevents booting. Always confirm the exact DIMM style before purchasing any server memory kit.
-
Match Memory Speed Requirements
RAM speed must align with your system’s supported frequency. Running faster modules often downclocks them to the lowest common denominator. The A-Tech 32GB DDR4 3200MHz ECC RDIMM suits platforms designed for high-frequency operations. Conversely, the 2133MHz LRDIMM kits target older or specific server boards like the ASRock Rack ROMED8-2T. Buying higher speeds than your server supports wastes potential performance. Verify the maximum supported MHz in your server documentation to ensure optimal compatibility and stability.
-
Confirm ECC Support Needs
Error Correction Code memory is critical for server reliability. It detects and fixes data corruption automatically. All listed A-Tech modules feature ECC support. This ensures data integrity during heavy computational tasks. If your server requires ECC, do not buy standard desktop memory. The A-Tech 16GB DDR4 2400MHz ECC UDIMM provides unbuffered ECC for smaller servers. Always verify that your motherboard supports ECC functionality. Using non-ECC memory in a server environment risks silent data corruption and system instability over time.
-
Check Voltage Specifications
Server memory typically runs at 1.2V. This standard voltage ensures compatibility with most DDR4 server platforms. Some modules specify this voltage explicitly. The A-Tech 32GB DDR4 2400MHz ECC RDIMM operates at 1.2V. Mismatched voltage can cause instability or hardware damage. Always check the voltage rating in the product specifications. Ensure your server’s memory controller supports the voltage level of the new RAM. Standardizing on 1.2V DDR4 modules simplifies upgrades and reduces compatibility risks across different server generations.
-
Assess Capacity and Rank
Capacity determines how much data your server can hold in memory. Rank affects stability and speed. The A-Tech 128GB DDR4 2933MHz ECC LRDIMM uses a 4DRx4 design for high density. The 32GB RDIMM options often use 2Rx4 designs for balanced performance. Higher rank counts can limit maximum speed. Choose capacity based on your workload requirements. Verify that your server supports the total installed memory. Mixing ranks or capacities can lead to suboptimal performance. Always plan your memory configuration to match your specific application needs.
Frequently asked questions
What is the difference between LRDIMM and RDIMM server memory?
LRDIMMs use load-reduced design to support higher capacities, making them ideal for virtualization and database workloads. RDIMMs offer registered stability for general server workloads. LRDIMMs add slight latency but handle more data. RDIMMs are standard for most general-purpose servers. You should match the form factor to your motherboard's specific requirements.
Can I use ECC UDIMM in a server?
Yes, ECC UDIMMs work in servers configured for unbuffered memory. They provide error correction without the buffer found in RDIMMs or LRDIMMs. These modules are suited for smaller systems or specific workstations. Ensure your server supports 2400MHz or 3200MHz speeds depending on the model. Always verify compatibility before installation.
Does A-Tech server RAM support 1.2V voltage?
Most A-Tech DDR4 server modules operate at 1.2V. This standard voltage applies to RDIMMs, LRDIMMs, and UDIMMs in this lineup. Consistent voltage ensures compatibility with modern server platforms. Check the specific product attributes to confirm the voltage rating. Matching voltage is critical for stable server operation and power efficiency.
What speed should I choose for Dell PowerEdge servers?
Choose 2400MHz or 2666MHz depending on your specific PowerEdge model. The 2400MHz LRDIMM fits R630 configurations, while 2666MHz supports R440 and R640 systems. Higher speeds like 3200MHz are available for newer platforms. Always verify the maximum supported speed in your server manual. Mismatched speeds can cause boot failures.
Is ECC support necessary for server memory?
ECC support is essential for server environments to detect and correct memory errors. All A-Tech options in this list include ECC. This feature prevents data corruption and system crashes during critical tasks. You should never use non-ECC memory in servers requiring error correction. Verify ECC support in the product attributes before purchasing.
How do I identify quad-rank memory modules?
Quad-rank modules are labeled as 4Rx4 or similar designations. They provide high density, often in 64GB or 128GB kits. These are best for ASRock Rack ROMED8-2T systems. Quad-rank LRDIMMs support large memory pools for virtualization. Check the size and rank specifications to identify the correct module for your high-capacity needs.