9 Best OWC 8GB DDR4 RAMS, Compared
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Choosing the best OWC 8GB ddr4 RAMs requires matching specific speeds and form factors to your hardware. The top pick is the OWC 8GB DDR4 2400MHz SODIMM, which leads because its 2400MHz speed is ideal for 2017 iMacs and laptop upgrades. We compared 9 products using only the specifications published on their listings. This approach ensures you find memory that fits your device’s physical and electrical requirements. Use this guide to decide which capacity, speed, and type of RAM suits your system.
Quick picks
The best fit for you
- You need a 2400MHz upgrade for a 2017 iMac OWC 8GB DDR4 2400MHz SODIMM It matches the required 2400MHz speed and SODIMM form factor for that specific machine.
- You require error-correcting memory for a Synology NAS server OWC 8GB DDR4 2666MHz ECC SODIMM It provides 2666MHz ECC SODIMM memory to ensure data integrity for your storage system.
- You want fast Non-ECC memory for a desktop computer OWC 8GB DDR4 3200MHz UDIMM It delivers 3200MHz UDIMM speeds without error correction for standard desktop performance.
Our 9 picks
OWC 8GB DDR4 2400MHz SODIMM
Best for: 2017 iMac and laptop upgrades
- Size
- 8GB (what this guide is about)
- Total Capacity
- 8GB
- Memory Speed
- 2400MHz
- Voltage
- 1.2 Volts
- Module Configuration
- 1 x 8GB
- Form Factor
- SO-DIMM
View on Amazon: OWC 8GB DDR4 2400MHz SODIMM Affiliate link
This OWC 8GB DDR4 SO-DIMM runs at 2400MHz. It uses 1.2 volts and is non-ECC. The module fits 260-pin slots in laptops and all-in-one PCs. It works with 2017 iMacs and other compatible systems. You get a lifetime limited warranty. This kit is ideal if you need a reliable upgrade for older hardware that requires slower speeds.
Pros
- 8GB capacity for single-stick upgrades
- 2400MHz speed for compatible systems
- Low 1.2V power consumption
- Lifetime limited warranty included
Cons
- Slower 2400MHz speed than 2666MHz or 3200MHz options
- Non-ECC type limits use in servers
- SO-DIMM form factor restricts desktop use
Good fit if
- You own a 2017 iMac requiring 2400MHz RAM
- You need a budget-friendly laptop upgrade
- You want a lifetime warranty for peace of mind
Skip if
- You need 3200MHz speed for newer systems
- You require ECC memory for error correction
- You are upgrading a standard desktop PC
Verdict: OWC 8GB DDR4 2400MHz SO-DIMM is a solid choice for 2017 iMac owners or laptop users needing a specific 2400MHz upgrade. It offers reliable performance within its speed class.
OWC 8GB DDR4 2666MHz SODIMM
Best for: Laptop and older Mac upgrades
- Size
- 8GB (what this guide is about)
- Total Capacity
- 8GB
- Memory Speed
- 2666MHz
- Voltage
- 1.2 Volts
- Module Configuration
- 1 x 8GB
- Form Factor
- SO-DIMM
View on Amazon: OWC 8GB DDR4 2666MHz SODIMM Affiliate link
This is an 8GB DDR4 SO-DIMM module running at 2666MHz (PC4-21300). It operates at 1.2 Volts and is Non-ECC. The kit fits 260-pin slots in laptops and compact desktops. It includes a lifetime warranty. You should choose this if you need a reliable upgrade for compatible 2018-2020 Mac models or standard PC laptops.
Pros
- 2666MHz speed for smooth performance
- 1.2 Volts low power consumption
- Lifetime Advanced Replacement warranty
- JEDEC compliant specifications
Cons
- 2666MHz is slower than 3200MHz options
- Non-ECC limits use in servers
- SO-DIMM form factor restricts desktop use
Good fit if
- You own a 2018-2020 iMac or Mac mini
- You need a laptop memory upgrade
- You want a lifetime warranty
Skip if
- You require 3200MHz speed
- You need ECC memory for servers
- You are upgrading a desktop tower
Verdict: OWC 8GB DDR4 2666MHz SO-DIMM is a solid upgrade for compatible Macs and laptops. It offers reliable performance with a strong warranty, though it lacks the speed of newer 3200MHz kits.
OWC 8GB DDR4 3200MHz UDIMM
Best for: Desktops needing fast Non-ECC memory
- Size
- 8GB (what this guide is about)
- Total Capacity
- 8GB
- Memory Speed
- 3200MHz
- CAS Latency
- CL22
- Voltage
- 1.2V
- Module Configuration
- 1x8GB
View on Amazon: OWC 8GB DDR4 3200MHz UDIMM Affiliate link
This OWC module is an 8GB DDR4 3200MHz PC4-25600 Non-ECC Unbuffered DIMM. It operates at 1.2V with CL22 latency. The 288-pin design fits standard desktop motherboards. You get a limited lifetime warranty and free tech support. It is ideal for desktop users who need high-speed memory without error correction features. The single stick offers a straightforward upgrade path for compatible systems.
Pros
- 3200MHz speed for fast data transfer
- Non-ECC Unbuffered design for standard desktops
- Limited lifetime warranty included
- 1.2V low voltage operation
Cons
- Non-ECC type lacks error correction
- Single stick configuration only
- UDIMM form factor not for laptops
Good fit if
- You need high-speed desktop memory
- You want a lifetime warranty
- Your system supports Non-ECC RAM
Skip if
- You require ECC error correction
- You are upgrading a laptop
- You need a dual-channel kit
Verdict: OWC 8GB DDR4 3200MHz UDIMM delivers top-tier speed for desktops. It suits users who prioritize performance and long-term warranty coverage over error correction.
OWC 8GB DDR4 3200MHz ECC UDIMM
Best for: Desktops and servers needing ECC stability
- Size
- 8GB (what this guide is about)
- Total Capacity
- 8GB
- Memory Speed
- 3200MHz
- CAS Latency
- CL22
- Voltage
- 1.2V
- Module Configuration
- 1 x 8GB
View on Amazon: OWC 8GB DDR4 3200MHz ECC UDIMM Affiliate link
This is an OWC 8GB DDR4 memory module running at 3200MHz with ECC support. It uses a 288-pin UDIMM form factor and operates at 1.2V. The module features CL22 latency and meets JEDEC standards. It suits desktops, workstations, and servers that require error-correcting code memory for stability. You get a limited lifetime warranty and free tech support.
Pros
- 3200MHz memory speed for fast data transfer
- ECC support for data integrity in workstations
- 288-pin UDIMM form factor for desktops
- Limited lifetime warranty with free tech support
Cons
- Requires a motherboard that supports ECC memory
- Single stick may limit dual-channel performance
- Not compatible with laptop SODIMM slots
Good fit if
- You need ECC memory for server stability
- You are upgrading a desktop workstation
- You want a lifetime warranty on RAM
Skip if
- You are using a standard laptop
- Your motherboard does not support ECC
- You need a dual-channel kit
Verdict: OWC 8GB DDR4 3200MHz ECC UDIMM is a stable choice for desktops and servers that require error-correcting memory. It fits users who prioritize data integrity over maximum gaming bandwidth.
OWC 8GB DDR4 2666MHz ECC UDIMM
Best for: Desktops needing ECC stability
- Size
- 8GB (what this guide is about)
- Total Capacity
- 8GB
- Memory Speed
- 2666MHz
- CAS Latency
- CL19
- Voltage
- 1.2V
- Module Configuration
- 1x8GB
View on Amazon: OWC 8GB DDR4 2666MHz ECC UDIMM Affiliate link
This is a single 8GB DDR4 memory module designed for desktops and workstations. It runs at 2666MHz with PC4-21300 speed and features ECC support for data integrity. The 288-pin UDIMM form factor fits standard desktop slots. You should choose this if you need reliable, JEDEC-compliant memory for professional tasks. It includes a limited lifetime warranty and free tech support from OWC.
Pros
- ECC support for error correction
- 2666MHz speed on 288-pin UDIMM
- Limited lifetime warranty included
- JEDEC standard compliant
Cons
- Slower 2666MHz speed compared to 3200MHz options
- Single stick limits dual-channel performance
- UDIMM form factor not for laptops
Good fit if
- You need ECC memory for desktop stability
- You are upgrading a workstation or server
- You want a lifetime warranty
Skip if
- You need faster 3200MHz speeds
- You are upgrading a laptop
- You want a dual-channel kit
Verdict: OWC 8GB DDR4 2666MHz ECC UDIMM is a solid choice for desktops requiring error correction. It suits users prioritizing stability and warranty over raw speed.
OWC 8GB DDR4 2666MHz ECC SODIMM
Best for: Synology NAS servers needing ECC memory
- Size
- 8GB (what this guide is about)
- Total Capacity
- 8GB
- Memory Speed
- 2666MHz
- CAS Latency
- CL19
- Voltage
- 1.2V
- Form Factor
- SODIMM
View on Amazon: OWC 8GB DDR4 2666MHz ECC SODIMM Affiliate link
This is an 8GB DDR4 SODIMM module running at 2666MHz with ECC support. It is designed for Synology NAS and server models like the DS1522+ and RS1221+. ECC memory helps detect and correct data errors, which is vital for server reliability. The module operates at 1.2V and uses a 260-pin connector. It fits systems requiring single-rank 1Rx8 memory configurations for stable operation.
Pros
- ECC support for error correction
- 2666MHz speed rating
- Compatible with Synology NAS models
- Limited lifetime warranty included
Cons
- 2666MHz is slower than 3200MHz options
- ECC SODIMM is not for standard desktops
- Single 8GB stick limits total capacity
Good fit if
- You need ECC memory for a Synology NAS
- You require 2666MHz speed for your server
- You want a limited lifetime warranty
Skip if
- You need 3200MHz speed
- You are upgrading a standard desktop PC
- You need Non-ECC memory
Verdict: OWC 8GB DDR4 2666MHz ECC SODIMM is the right choice for Synology NAS owners who need error-correcting memory at 2666MHz. It ensures data integrity for your storage server.
OWC 8GB DDR4 3200MHz ECC SODIMM
Best for: Servers and NAS systems needing ECC memory
- Size
- 8GB (what this guide is about)
- Total Capacity
- 8GB
- Memory Speed
- 3200MHz
- CAS Latency
- CL22
- Voltage
- 1.2V
- Form Factor
- SO-DIMM
View on Amazon: OWC 8GB DDR4 3200MHz ECC SODIMM Affiliate link
This is an 8GB DDR4 SODIMM module running at 3200MHz with ECC support. It uses a 260-pin form factor and operates at 1.2V. The module is JEDEC compliant and designed for servers, micro servers, or NAS systems. You get a limited lifetime warranty and free tech support. This kit is ideal if you need error-correcting memory for reliable computing in compact systems.
Pros
- 3200MHz speed for fast data transfer
- ECC support for error correction
- 260-pin SODIMM form factor
- Limited lifetime warranty included
Cons
- ECC memory may not work in standard consumer laptops
- Single stick limits dual-channel performance gains
- Higher cost than non-ECC alternatives
Good fit if
- You need ECC memory for data integrity
- You are upgrading a compatible server or NAS
- You require 3200MHz speed in SODIMM form
Skip if
- You are using a standard consumer laptop without ECC support
- You need a dual-channel kit for gaming
- You want the lowest possible price for basic memory
Verdict: OWC 8GB DDR4 3200MHz ECC SODIMM is a reliable upgrade for servers and NAS systems that require error-correcting memory. It fits users who prioritize data integrity over cost savings in specialized hardware.
OWC 8GB DDR4 2666MHz Non-ECC SODIMM
Best for: budget laptop upgrades
- Size
- 8GB (what this guide is about)
- Total Capacity
- 8GB
- Memory Speed
- 2666MHz
- CAS Latency
- CL19
- Voltage
- 1.2V
- Module Configuration
- 1x8GB
View on Amazon: OWC 8GB DDR4 2666MHz Non-ECC SODIMM Affiliate link
This is an 8GB DDR4 memory module running at 2666MHz. It uses a 260-pin SODIMM form factor and operates at 1.2V. The kit is Non-ECC with CL19 latency. It fits laptops and small form factor PCs. You get a limited lifetime warranty and free tech support. It is a budget-friendly upgrade for older systems.
Pros
- 8GB DDR4 capacity
- 2666MHz memory speed
- 260-pin SODIMM form factor
- 1.2V operating voltage
- Limited lifetime warranty
Cons
- 2666MHz speed is slower than 3200MHz options
- Non-ECC type lacks error correction
- Single stick configuration only
Good fit if
- You need a budget upgrade for a laptop
- Your device supports DDR4 2666MHz memory
- You want a simple single-stick installation
Skip if
- You require error correction for workstations
- You need maximum 3200MHz bandwidth
- You are building a desktop computer
Verdict: OWC 8GB DDR4 2666MHz SODIMM is a practical choice for users upgrading older laptops who prioritize cost over speed. It suits those who do not need ECC protection or higher frequencies.
OWC 8GB DDR4 3200MHz Non-ECC SODIMM
Best for: Laptop upgrades requiring 3200MHz speed
- Size
- 8GB (what this guide is about)
- Total Capacity
- 8GB
- Memory Speed
- 3200MHz
- CAS Latency
- CL22
- Voltage
- 1.2V
- Module Configuration
- 1x8GB
View on Amazon: OWC 8GB DDR4 3200MHz Non-ECC SODIMM Affiliate link
This OWC module is an 8GB DDR4 SODIMM running at 3200MHz with a CAS Latency of CL22. It operates at 1.2V and uses Non-ECC technology. The 260-pin design fits laptops and small form factor PCs. It meets JEDEC standards for compatibility. You get a lifetime warranty and free tech support. This kit boosts performance for everyday computing tasks in compatible systems.
Pros
- 3200MHz memory speed for efficient data transfer
- Low 1.2V voltage for energy efficiency
- Limited lifetime warranty with free tech support
- JEDEC compliant for broad system compatibility
Cons
- Non-ECC error correction limits use in servers
- Single stick configuration may limit dual-channel performance
- SODIMM form factor is not for desktops
Good fit if
- You need a fast 3200MHz upgrade for a laptop
- You want a module with a lifetime warranty
- You are upgrading a system that requires SODIMM
Skip if
- You need ECC memory for data integrity
- You are building a desktop PC with DIMM slots
- You require a dual-channel kit for maximum bandwidth
Verdict: OWC 8GB DDR4 3200MHz SODIMM is a reliable upgrade for laptops needing speed. It fits users who value long-term warranty coverage and standard JEDEC compatibility for their portable devices.
Specifications side by side
| Spec | OWC 8GB DDR4 2400MHz SODIMM | OWC 8GB DDR4 2666MHz SODIMM | OWC 8GB DDR4 3200MHz UDIMM | OWC 8GB DDR4 3200MHz ECC UDIMM | OWC 8GB DDR4 2666MHz ECC UDIMM | OWC 8GB DDR4 2666MHz ECC SODIMM | OWC 8GB DDR4 3200MHz ECC SODIMM | OWC 8GB DDR4 2666MHz Non-ECC SODIMM | OWC 8GB DDR4 3200MHz Non-ECC SODIMM |
|---|---|---|---|---|---|---|---|---|---|
| Total Capacity | 8GB | 8GB | 8GB | 8GB | 8GB | 8GB | 8GB | 8GB | 8GB |
| Memory Speed | 2400MHz | 2666MHz | 3200MHz | 3200MHz | 2666MHz | 2666MHz | 3200MHz | 2666MHz | 3200MHz |
| CAS Latency | not stated | not stated | CL22 | CL22 | CL19 | CL19 | CL22 | CL19 | CL22 |
| Voltage | 1.2 Volts | 1.2 Volts | 1.2V | 1.2V | 1.2V | 1.2V | 1.2V | 1.2V | 1.2V |
| Module Configuration | 1 x 8GB | 1 x 8GB | 1x8GB | 1 x 8GB | 1x8GB | not stated | not stated | 1x8GB | 1x8GB |
| Form Factor | SO-DIMM | SO-DIMM | UDIMM | UDIMM | UDIMM | SODIMM | SO-DIMM | SODIMM | SO-DIMM |
| ECC Support | Non-ECC | Non-ECC | Non-ECC | ECC Unbuffered | ECC | ECC Unbuffered | ECC Unbuffered | Non-ECC | Non-ECC |
| Compatible Device | Mac | Mac | not stated | not stated | not stated | Laptop | Laptop | not stated | Laptop |
| Size | 8GB | 8GB | 8GB | 8GB | 8GB | 8GB | 8GB | 8GB | 8GB |
| Dimensions | 7.09 × 4.92 × 0.39 inches | 6.1 × 4.69 × 0.31 inches | not stated | not stated | not stated | not stated | not stated | not stated | not stated |
| Weight | not stated | 0.81 ounces | not stated | not stated | not stated | not stated | not stated | not stated | not stated |
| Color | 1 x 8GB | 1 x 8GB | not stated | not stated | Black | not stated | not stated | not stated | not stated |
| Model | OWC2400DDR4S8GB | 2666DDR4S08G | OWC3U2D41R808GB | OWC3E2D41R808GB | OWC2E6D41R808GB | OWC2C6D41R808GB | OWC3C2D41R808GB | OWC2S6D41R808GB | OWC3S2D41R808GB |
If you need a complete mobile device with this memory capacity, you can compare the best tablets with 8GB RAM.
How to choose the right OWC 8GB RAM
-
Match the speed to your device
Check your system's supported memory frequency before buying. Older laptops and 2017 iMacs often require 2400MHz or 2666MHz modules. Newer desktops may benefit from 3200MHz speeds. Installing RAM with a higher speed than your system supports will downclock it to the maximum allowed rate. For example, the OWC 8GB DDR4 2400MHz SODIMM is ideal for older Apple hardware. Ensure the MHz rating matches your motherboard's specifications for optimal performance.
-
Select the correct form factor
Physical dimensions determine compatibility. SODIMM modules are designed for laptops and compact devices. UDIMM modules are intended for standard desktop towers. Using the wrong form factor will prevent installation. The OWC 8GB DDR4 2666MHz ECC SODIMM fits Synology NAS servers and laptops. Meanwhile, the OWC 8GB DDR4 3200MHz UDIMM is built for desktops. Verify your slot type before purchasing to avoid hardware incompatibility issues.
-
Decide if you need ECC support
Error Correction Code (ECC) memory detects and fixes data corruption. This feature is critical for servers, workstations, and NAS devices like Synology systems. Most standard gaming PCs do not require ECC. If you prioritize data integrity, choose an ECC module like the OWC 8GB DDR4 3200MHz ECC UDIMM. If you are upgrading a standard laptop, a Non-ECC option like the OWC 8GB DDR4 3200MHz Non-ECC SODIMM is sufficient and often more compatible.
-
Verify JEDEC compatibility standards
Standard JEDEC specifications ensure broad compatibility across different manufacturers. Most OWC 8GB DDR4 kits adhere to these standards, making them safe upgrades for various systems. This includes models like the OWC 8GB DDR4 2666MHz Non-ECC SODIMM. Avoid proprietary or non-standard timings unless your motherboard explicitly supports them. Standard speeds reduce the risk of boot failures or system instability during the upgrade process.
-
Consider warranty coverage length
OWC provides long-term warranty coverage on its memory products. This is a practical benefit for users planning to keep their hardware for many years. A robust warranty protects against manufacturing defects over time. This applies to all listed models, including the premium OWC 8GB DDR4 2666MHz ECC UDIMM. Check the specific warranty terms for your region. Reliable support ensures your investment remains protected throughout the lifespan of your device.
Frequently asked questions
Which OWC DDR4 RAM is best for a 2017 iMac?
The OWC 8GB DDR4 2400MHz SODIMM is the best choice. It matches the specific 2400MHz speed required by 2017 iMacs. The SODIMM form factor fits directly into the laptop-style memory slots found in these all-in-one desktops. This ensures reliable performance without compatibility issues.
Do I need ECC memory for my desktop computer?
ECC memory is not required for standard desktops but is vital for servers or workstations needing data integrity. The OWC 8GB DDR4 3200MHz ECC UDIMM offers error correction for stable operation. If you do not need error correction, the Non-ECC version provides faster speeds for general use.
What is the difference between SODIMM and UDIMM RAM?
SODIMM modules are smaller and designed for laptops, iMacs, and compact systems like Synology NAS servers. UDIMMs are larger and intended for standard desktop motherboards. Choose SODIMM for portable or small form factor devices. Select UDIMM for traditional desktop towers to ensure the physical module fits your slots.
Which OWC RAM is best for a Synology NAS?
The OWC 8GB DDR4 2666MHz ECC SODIMM is ideal for Synology NAS servers. It provides the necessary error-correcting memory to protect your stored data. The SODIMM form factor ensures compatibility with the specific memory slots found in these network storage devices. This setup ensures long-term stability for your files.
Can I use 3200MHz RAM in an older laptop?
You can only use 3200MHz RAM if your laptop supports that specific speed. Older systems often require 2400MHz or 2666MHz modules. The OWC 8GB DDR4 2666MHz Non-ECC SODIMM is a practical option for older laptops that do not support higher frequencies. Always check your system specifications before purchasing faster RAM.
Is Non-ECC RAM suitable for gaming desktops?
Yes, Non-ECC RAM is suitable for gaming desktops because it prioritizes speed over error correction. The OWC 8GB DDR4 3200MHz Non-ECC UDIMM delivers top-tier performance for these tasks. It fits standard desktop slots and offers the bandwidth needed for modern games. You save cost compared to ECC options while maintaining high speeds.
Which OWC RAM has the longest warranty coverage?
The OWC 8GB DDR4 2666MHz Non-ECC SODIMM is highlighted for its practical value and warranty coverage. It suits users upgrading older laptops who prioritize reliability. The product data notes strong warranty support for compatible Macs and laptops. This makes it a dependable choice for long-term use in portable devices without needing ECC features.