SK Hynix 64GB DDR4 2400MHz ECC Review (2026): A Spec-Based Look
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This sk hynix 64gb 4gx4 ddr4 2400mhz ecc reg review covers a module built for enterprise workloads. It is a 64GB Load Reduced DIMM designed for server environments. The two specs that define this kit are its 2400MHz data rate and its ECC/REG architecture. These features ensure data integrity and support for high-capacity memory configurations in critical systems. You get a single stick of 64GB, which is substantial for virtualization or database applications. The module operates at 1.2V, providing standard efficiency for modern server racks. This listing is for the HMAA8GL7MMR4N-UH model, a specific part number for IT professionals.
What stands out
- 64GB capacity in a single module for high-density setups
- 2400MHz speed with PC4-19200 transfer rate
- ECC and Registered (REG) support for server reliability
- 1.2V operating voltage for standard power efficiency
- 288-pin Load Reduced (LRDIMM) form factor
Who it fits
Good fit for
This memory is for system administrators and data center managers who need to expand server capacity without sacrificing stability. If you run virtual machines, databases, or heavy analytics, the 64GB size and ECC protection are essential. The LRDIMM design allows you to populate more slots than standard RDIMMs, making it ideal for high-end workstations or enterprise servers that require large memory pools. You should choose this if your motherboard explicitly supports 2400MHz ECC LRDIMMs.
Who should skip it
You should skip this option if you are building a gaming PC or a standard desktop. This is a server-grade module, not consumer memory. It will not fit in standard desktop motherboards due to its LRDIMM architecture. Additionally, if your system does not support ECC or registered memory, this stick will not work. You also need a compatible server CPU and chipset. If you need faster speeds like 3200MHz or higher, this 2400MHz module is too slow for your needs.
Verdict: This SK Hynix stick is a solid, spec-driven choice for enterprise servers needing high capacity and error correction. It fits specific LRDIMM slots and delivers reliable performance for data-heavy tasks.
Key specs explained for this module
Capacity: 64GB
This module holds 64 gigabytes of data. You use this space to run multiple virtual machines or large databases without slowing down. It fits into servers that need high memory density. If you only run basic office apps, this capacity is far more than you need. You should compare this size with standard 16GB or 32GB desktop sticks to see the scale difference.
Memory Speed: 2400MHz
The memory transfers data at 2400 megatransfers per second. This speed ensures stable communication between your processor and the RAM. It is standard for many enterprise servers. You do not get the high speeds found in gaming kits. When shopping, check that your server motherboard supports this rate to avoid compatibility issues or downclocking.
ECC Support: ECC
Error Correction Code detects and fixes data corruption. You benefit from this because it prevents crashes caused by bit flips. This is critical for financial records or medical data. Standard desktop RAM lacks this feature. You should verify your system supports ECC, as consumer motherboards often ignore these errors, leading to silent data loss over time.
Form Factor: 288 Pin
This module uses 288 pins to connect to the motherboard. You must ensure your server has the correct DIMM slots. It does not fit in desktop computers which use different pin counts. When buying, check your server manual for supported form factors. This physical design ensures the module only inserts into compatible enterprise hardware safely.
Physical design and build details
The listing describes this module as a 288-pin Load Reduced DIMM. This specific form factor dictates compatibility. You can only install it in servers that support LRDIMMs. The physical dimensions are 6 inches in width and 1 inch in height. The length is listed as 9 inches. These measurements ensure the module fits standard server slots. The weight is 0.02 lbs. This light weight is typical for memory modules. It does not add significant mass to the server chassis. The color is listed as multicolor. This likely refers to the PCB and components visible on the stick. The model number is HMAA8GL7MMR4N-UH. This identifier helps you verify exact compatibility with your server motherboard. The build is designed for enterprise environments. It is not intended for consumer desktops. The 288-pin layout ensures a secure connection. This reduces the risk of poor contact in high-vibration server racks. The load-reduced design helps manage electrical load. This allows servers to use high-capacity modules without stability issues. You should check your server manual for LRDIMM support before purchasing. The physical design prioritizes reliability and density. It supports heavy workloads like virtualization. The compact size helps with airflow in dense server racks. This makes it suitable for data center use. The listing provides these specs to help you plan your hardware configuration. You need to ensure your system supports 1.2V voltage. This module operates at that standard voltage level. The build quality is focused on server-grade performance. It is not designed for aesthetic appeal. The focus is on function and compatibility. You should rely on the model number for precise matching. The physical attributes are straightforward and functional.
Setup and everyday use
Installing this module requires a compatible server platform. The 288-pin Load Reduced form factor means you cannot use it in standard desktops or laptops. You must verify that your motherboard supports LRDIMMs before purchase. The 1.2V voltage rating is standard for DDR4, so it fits within typical server power profiles. Setup involves placing the DIMM into the appropriate slot on the server motherboard. The system BIOS must recognize the 64GB capacity and 2400MHz speed. ECC support is enabled by default in server environments. This feature checks for data errors during read and write operations. You benefit from increased stability when running critical workloads. The 4Rx4 rank configuration affects how the memory controller manages data. It allows the server to handle heavy multitasking without bottlenecks. Everyday use involves running virtual machines, large databases, or enterprise applications. The 2400MHz data rate ensures steady performance for these tasks. CL 17 latency is typical for high-capacity server memory. It balances speed with the stability needed for continuous operation. You should monitor system logs for any ECC corrections. Frequent corrections might indicate hardware issues. The module’s weight of 0.02 lbs is negligible in rack servers. You do not need special cooling beyond standard server airflow. The 19200 MT/s transfer rate supports high-bandwidth applications. This makes the module suitable for data-intensive environments. Ensure your server firmware is updated for best compatibility. This step helps the system manage the large memory capacity efficiently. You get reliable performance as long as the server hardware meets the specifications.
Compatibility checks before purchase
Before you buy, verify your server supports Load Reduced DIMMs. This 284-pin module will not fit standard desktops or laptops. You must check motherboard compatibility for ECC REG support. Ensure your server’s memory controller handles 64GB modules at 2400MHz. This kit suits enterprise workloads like virtualization or large databases. It does not fit consumer PCs. You need a compatible server platform to use it. The 1.2V voltage is standard, but the LRDIMM type is restrictive. Check your existing memory configuration for matching specs. Mixing different ranks or speeds can cause instability. This option is for high-density server environments. It lacks the flexibility of desktop memory. You should confirm BIOS updates are available for your server model. This ensures stable operation with high-capacity modules. This kit is a specialized tool for specific hardware. It is not a general-purpose upgrade. Ensure your infrastructure matches these strict requirements before purchasing.
Check before you buy
- Verify server supports 288-pin LRDIMMs
- Check motherboard ECC REG compatibility
- Confirm 64GB module support in BIOS
- Ensure 2400MHz speed matches system specs
- Validate existing memory configuration for stability
The product at a glance
SK Hynix 64GB DDR4 2400MHz ECC LRDIMM
Best for: Server memory upgrades needing 64GB capacity
- Total Capacity
- 64GB
- Memory Speed
- 2400MHz
- CAS Latency
- CL 17
- Voltage
- 1.2V
- Form Factor
- Load Reduced
- ECC Support
- ECC/REG
View on Amazon: SK Hynix 64GB DDR4 2400MHz ECC LRDIMM Affiliate link
This is a 64GB DDR4 server memory module running at 2400MHz with ECC and registered support. It uses 288-pin DIMMs and operates at 1.2V. The CAS latency is CL17. You need this for server workloads that require large memory capacity and error correction. It is not for standard desktop PCs.
Pros
- 64GB capacity for high memory demands
- ECC support ensures data integrity
- Registered (Load Reduced) design for stability
- 2400MHz speed rating
Cons
- Registered memory requires compatible server motherboards
- ECC and registered features are not for consumer desktops
- 2400MHz speed is standard for DDR4
Good fit if
- You are building or upgrading a server system
- You need 64GB of error-correcting memory
- Your motherboard supports registered DDR4 DIMMs
Skip if
- You are using a standard consumer desktop PC
- You need non-ECC unbuffered memory
- You require speeds faster than 2400MHz
Verdict: SK Hynix 64GB DDR4-2400 ECC Registered is a specialized module for server environments. It fits users who need large, stable memory capacity with error correction on compatible hardware.
Specifications side by side
| Spec | SK Hynix 64GB DDR4 2400MHz ECC LRDIMM |
|---|---|
| Total Capacity | 64GB |
| Memory Speed | 2400MHz |
| CAS Latency | CL 17 |
| Voltage | 1.2V |
| Form Factor | Load Reduced |
| ECC Support | ECC/REG |
| Compatible Device | Server |
| Size | 64GB |
| Dimensions | 9 × 6 × 1 inches |
| Color | Multicolor |
| Model | HMAA8GL7MMR4N-UH |
Frequently asked questions
Is this SK Hynix module compatible with standard desktop computers?
No, this module is not compatible with standard desktops. It is a Load Reduced DIMM designed specifically for server environments. You must verify that your motherboard supports LRDIMMs before purchase. Standard desktops and laptops do not support this specific form factor or the required ECC REG architecture.
What is the CAS latency of this 64GB memory kit?
The CAS latency for this module is CL17. This timing specification indicates the delay between the memory controller requesting data and the data being available on the pins. You will find this latency paired with the 2400MHz data rate for stable enterprise performance.
Does this RAM support error correction?
Yes, this module supports ECC, which stands for Error Correcting Code. This feature detects and corrects common types of internal data corruption. It is essential for server environments where data integrity is critical for running large databases or virtual machines without interruption.
What is the exact model number for this SK Hynix RAM?
The model number for this specific module is HMAA8GL7MMR4N-UH. You can use this identifier to verify compatibility with your server hardware. It helps ensure you are purchasing the correct 64GB DDR4-2400 ECC Registered variant for your specific enterprise needs.
Can I use this memory for gaming on a PC?
You cannot use this memory for standard PC gaming. This is a specialized Load Reduced DIMM intended for server workloads. It requires specific server motherboards that support ECC REG technology. Standard gaming PCs do not support this form factor or the associated voltage requirements.
What are the physical dimensions of this memory stick?
The physical dimensions are listed as 9 inches in length, 6 inches in width, and 1 inch in height. These measurements describe the packaging or overall module size rather than the circuit board itself. You should check your server slot clearance before installation.