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
Two green DDR5 RDIMM modules with gold contacts and black chips, no heat spreaders

NEMIX RAM

NEMIX RAM CSE-GS7A-2000B 64GB (2x32GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-9WNZ-D6YJF MPN CSE-GS7A-2000B

Dual 32 GB DDR5 4800 ECC registered DIMMs totalling 64 GB for Supermicro workstations

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 64 GB total capacity for demanding server workloads
  • DDR5 4800 speed with PC5-38400 bandwidth rating
  • ECC registered design protects data integrity under load
  • 1 V operation reduces power draw in dense configurations
  • Validated for Supermicro SYS-551A-T workstation compatibility

64GB DDR5 ECC RDIMM kit

This 64GB kit contains two 32GB DDR5 4800 CL40 registered DIMMs built for the SuperMicro SuperWorkstation SYS-551A-T. It delivers 1.10V operation and on-die ECC for data integrity in professional workloads. Buyers needing non-ECC memory or consumer UDIMM form factors cannot use this kit.

Sustained load behaviour

Registered buffering and single-rank 1Rx4 organisation reduce electrical load on the memory controller during long compute sessions. Samsung, Micron or Hynix chips are tested under load to maintain stability at the rated PC5-38400 speed. Systems without RDIMM support will not post with these modules installed.

Installation notes

The 288-pin DDR5 modules key into the motherboard slots in one orientation; no heat spreader is fitted, so clearance is minimal. Mixing with existing RDIMMs of different rank or speed may prevent the system from training at 4800 MT/s. Always populate slots per the SuperWorkstation manual to avoid boot failures.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $1,812.99
Pricier than about 67% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $28.33 per GB
Pricier than about 80% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineSuperMicro Server/Workstation Compatible Series Memory
Model nameSuperMicro DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-314K2
Total capacity64 GB (2 × 32 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank1Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items64 GB (2 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How much power does the 1.10V DDR5 4800 kit draw when the SuperWorkstation runs all day?

Each module operates at 1.10V; total draw depends on the SYS-551A-T memory controller and workload, so check the system's power telemetry under sustained load.

What must the SuperMicro SuperWorkstation SYS-551A-T already have to accept this 288-pin RDIMM kit?

The workstation needs free DDR5 RDIMM slots that support 1Rx4 registered ECC modules at 4800 MT/s and a BIOS that recognises the 32GB density per DIMM.

Will the CL40 1Rx4 modules run alongside older DDR5 RDIMMs I keep in the same SYS-551A-T?

Mixed ranks or latencies force the memory controller to run all channels at the slowest common timing; populate identical kits per channel for stable 4800 operation.

More in Model-Specific Memory Upgrades

Similar items