SK hynix HMAA8GL7MMR4N-UH 64G DDR4 2400 RDIMM
The SK hynix HMAA8GL7MMR4N-UH is a 64GB DDR4-2400 LRDIMM built for memory-hungry server platforms — virtualization hosts, cloud nodes, and HPC clusters where high per-slot density matters. As a Load Reduced DIMM with quad-rank 4Rx4 organization, it trades a little latency headroom for lower electrical load on the memory bus, allowing denser population than standard RDIMMs on supported platforms. Note that LRDIMMs and RDIMMs should not be mixed in the same channel; verify your server’s QVL before ordering.
Key specifications (table)
| Parameter | Specification |
|---|---|
| Brand | SK hynix |
| Part Number | HMAA8GL7MMR4N-UH |
| Capacity | 64GB |
| Memory Type | DDR4 SDRAM |
| Module Type | LRDIMM (Load Reduced DIMM) (not interchangeable with RDIMM in the same channel) |
| Form Factor | 288-Pin DIMM (server form factor) |
| Data Rate | 2400 MT/s |
| Speed Grade | DDR4-2400 (may clock down on faster or slower platforms, platform dependent) |
| Bandwidth | PC4-19200 |
| Rank Configuration | 4Rx4 (Quad Rank) (check channel population limits per platform) |
| Error Correction | ECC Supported (requires ECC-capable platform) |
| CAS Latency | CL17 |
| Operating Voltage | 1.2V (standard DDR4 voltage) |
| Signal Processing | Registered / Load Reduced |
| Organization | 8G x 72 (72-bit includes ECC bits) |
| Application | Servers, Data Centers, Virtualization, Cloud Computing, HPC |
Good to know
- Compatibility: this is a DDR4 LRDIMM — it will not work in DDR3 or DDR5 systems and cannot be mixed with RDIMMs or UDIMMs on the same channel; confirm motherboard and CPU (e.g., Intel Xeon or AMD EPYC generation) support 64GB quad-rank LRDIMMs at 2400 MT/s.
- Within the DDR4 family, this LRDIMM sits above RDIMMs for maximum density: the load-reduced buffer lets controllers support more modules per channel, making it a fit for large-memory virtualization and caching tiers, while CL17 at 2400 MT/s is a typical baseline speed grade for that generation.
- Buying tip: purchase all modules for a server in matched part numbers and speed grades to avoid training issues, and confirm the 64GB 4Rx4 configuration against your vendor’s qualified memory list before scaling up.
For tray and reel pricing, current stock by part number and date code, and volume discounts on bulk orders, request a bulk quotation.
The SK hynix HMAA8GL7MMR4N-UH is a 64GB DDR4-2400 LRDIMM built for memory-hungry server platforms — virtualization hosts, cloud nodes, and HPC clusters where high per-slot density matters. As a Load Reduced DIMM with quad-rank 4Rx4 organization, it trades a little latency headroom for lower electrical load on the memory bus, allowing denser population than standard RDIMMs on supported platforms. Note that LRDIMMs and RDIMMs should not be mixed in the same channel; verify your server’s QVL before ordering.
Key specifications (table)
| Parameter | Specification |
|---|---|
| Brand | SK hynix |
| Part Number | HMAA8GL7MMR4N-UH |
| Capacity | 64GB |
| Memory Type | DDR4 SDRAM |
| Module Type | LRDIMM (Load Reduced DIMM) (not interchangeable with RDIMM in the same channel) |
| Form Factor | 288-Pin DIMM (server form factor) |
| Data Rate | 2400 MT/s |
| Speed Grade | DDR4-2400 (may clock down on faster or slower platforms, platform dependent) |
| Bandwidth | PC4-19200 |
| Rank Configuration | 4Rx4 (Quad Rank) (check channel population limits per platform) |
| Error Correction | ECC Supported (requires ECC-capable platform) |
| CAS Latency | CL17 |
| Operating Voltage | 1.2V (standard DDR4 voltage) |
| Signal Processing | Registered / Load Reduced |
| Organization | 8G x 72 (72-bit includes ECC bits) |
| Application | Servers, Data Centers, Virtualization, Cloud Computing, HPC |
Good to know
- Compatibility: this is a DDR4 LRDIMM — it will not work in DDR3 or DDR5 systems and cannot be mixed with RDIMMs or UDIMMs on the same channel; confirm motherboard and CPU (e.g., Intel Xeon or AMD EPYC generation) support 64GB quad-rank LRDIMMs at 2400 MT/s.
- Within the DDR4 family, this LRDIMM sits above RDIMMs for maximum density: the load-reduced buffer lets controllers support more modules per channel, making it a fit for large-memory virtualization and caching tiers, while CL17 at 2400 MT/s is a typical baseline speed grade for that generation.
- Buying tip: purchase all modules for a server in matched part numbers and speed grades to avoid training issues, and confirm the 64GB 4Rx4 configuration against your vendor’s qualified memory list before scaling up.
For tray and reel pricing, current stock by part number and date code, and volume discounts on bulk orders, request a bulk quotation.
