We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Eight green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 512GB (8x64GB) DDR5 4800 CL40 ECC RDIMM THINKMATE 621P-TR 621P-TRT 221P-C9R memory upgrade

SKU CH-R7E4-VVXT0

Eight 64 GB DDR5 ECC RDIMM modules at 4800 MT/s CL40 1.1 V for ThinkMate 621P-TR, 621P-TRT and 221P-C9R servers

  • Capacity512GB (8 x 64GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 512GB total capacity across 8 modules of 64GB each
  • DDR5 4800 speed with CL40 latency for server workloads
  • ECC registered RDIMM design protects data integrity
  • 10V operating voltage reduces power draw
  • Validated for ThinkMate 621P-TR, 621P-TRT and 221P-C9R systems

512GB DDR5 4800 ECC RDIMM kit

This 512GB kit contains eight 64GB DDR5 4800 registered ECC modules built for THINKMATE Supermicro SuperServer 621P-TR, 621P-TRT and 221P-C9R platforms. Each module runs at 1.10V with CL40 latency and a 2Rx4 organisation. The registered design adds a buffer that helps maintain signal integrity across all populated slots. It targets administrators who need maximum supported capacity in these specific servers.

Sustained load behaviour

Registered ECC modules correct single-bit errors on the fly and the register reduces electrical loading on the memory controller when every slot is filled. At DDR5 4800 the kit delivers PC5-38400 bandwidth continuously across all eight DIMMs. The 1.10V operating voltage keeps power draw predictable during long compute runs. No heat spreaders are fitted, so chassis airflow must handle the thermal load.

Upgrade context

The kit replaces any smaller-capacity DDR5 RDIMM set in the listed SuperServer models to reach the full 512GB configuration. The jump is worth it when workloads such as virtualisation, in-memory databases or large dataset processing exceed the current memory ceiling. Compatibility is validated for the 621P-TR, 621P-TRT and 221P-C9R part numbers only.

Highlights

  • 512GB total capacity across 8 modules of 64GB each
  • DDR5 4800 speed with CL40 latency for server workloads
  • ECC registered RDIMM design protects data integrity
  • 10V operating voltage reduces power draw
  • Validated for ThinkMate 621P-TR, 621P-TRT and 221P-C9R systems

Specifications

BrandNEMIX RAM
SeriesTHINKMATE Server/Workstation Compatible Series Memory
ModelTHINKMATE DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-924K8
Capacity512GB (8 x 64GB)
SpeedDDR5 4800 (PC5 38400)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemTHINKMATE
CAS LatencyCL40
Heat SpreaderNo
Type288-Pin DDR5 RDIMM
Rank2Rx4
FeaturesDDR5 ECC Registered RDIMM Server Motherboard Compatible
Package Content512GB (8X64GB) DDR5 4800MHZ PC5-38400 2Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Will the 1.10 V DDR5 modules add much heat or power draw when the ThinkMate 621P-TR runs continuously?

Each module operates at 1.10 V, the standard DDR5 voltage, so power draw per DIMM is low; total system heat will depend on the server's cooling design and the eight modules installed.

What must the ThinkMate 621P-TR already have to accept this 512 GB kit?

The server needs eight free 288-pin DDR5 RDIMM slots and a BIOS that supports 64 GB 2Rx4 registered ECC modules at 4800 MT/s.

Can the CL40 2Rx4 modules work alongside any existing DDR5 RDIMMs in a ThinkMate 621P-TR?

Mixing is possible only if the other modules are also DDR5 4800 registered ECC 2Rx4 at 1.10 V; otherwise the system will default to the slowest common speed or may not post.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.