SK hynix HMA42GR7AFR4N-TF 16GB DDR4 2133MHz CL15 ECC Registered Dual Rank 1.2V 288-Pin Server RAM
- 16GB
- 288-Pin DDR4 SDRAM
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NEMIX RAM
Eight 16 GB DDR5 modules deliver 128 GB of registered ECC memory at 4800 MHz CL40 and 1.1 V for ThinkMate Supermicro SuperServer 521C-NR
This 128GB kit contains eight 16GB DDR5 4800 registered DIMMs with ECC and a CAS latency of CL40. It operates at 1.1V and uses a 288-pin form factor for compatible server motherboards. The modules are single-rank 1Rx8 and built with major OEM chips for ThinkMate Supermicro SuperServer 521C-NR systems.
DDR5 4800 sets the baseline data rate for fifth-generation double data rate memory at 4800 MT/s. Registered buffering adds a clock cycle to address and command signals, which stabilises large populations of modules but prevents use in platforms that require unbuffered DIMMs. ECC corrects single-bit errors and detects double-bit errors, yet the registered design means these modules will not function in consumer desktop boards that lack registered memory support.
This kit replaces smaller DDR5 RDIMM sets or non-ECC DDR5 modules when the workload demands 128GB of registered, error-correcting capacity. The jump is worth it when the server platform supports eight DIMM slots at 4800 MT/s and the application requires data integrity across all ranks. Systems limited to fewer slots, lower speeds, or unbuffered memory cannot use this configuration.
| Brand | NEMIX RAM |
|---|---|
| Series | THINKMATE Server/Workstation Compatible Series Memory |
| Model | THINKMATE DDR5 4800MHZ ECC RDIMM Registered Server Memory |
| Part Number | MR38400-618K8 |
| Capacity | 128GB (8 x 16GB) |
| Speed | DDR5 4800 (PC5 38400) |
| ECC | Yes |
| Buffered/Registered | Registered |
| Chipset | Major OEM Samsung, Micron, Hynix |
| Voltage | 1.10V |
| Compatible System | THINKMATE |
| CAS Latency | CL40 |
| Heat Spreader | No |
| Type | 288-Pin DDR5 RDIMM |
| Rank | 1Rx8 |
| Features | DDR5 ECC Registered RDIMM Server Motherboard Compatible |
| Package Content | 128GB (8X16GB) DDR5 4800MHZ PC5-38400 1Rx8 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT |
The kit provides 128GB total across eight matched 16GB modules, tested together for stable operation in the target server.
It runs at DDR5 4800 (PC5-38400) with CL40 latency and 1.10V, giving the rated bandwidth the platform supports.
The registered 288-pin DDR5 RDIMM design adds a clock cycle for buffering, capping speed at 4800 MT/s while providing error correction and signal integrity for the server board.
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