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 without heat spreaders, 288-pin, 256GB kit

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR5 4800 CL40 2Rx4 ECC RDIMM memory upgrade

SKU CH-0G0B-4S1NV

256 GB DDR5 kit with two 128 GB ECC registered RDIMMs at 4800 MHz CL40, validated for ASRock Rack GENOA2D24G-2L+ motherboards

  • Capacity256GB (2 x 128GB)
  • Type288-Pin DDR5 RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.10V
  • ECCYes

Size 256GB 2X128GB

Show 4 more configurations
  • 256 GB capacity across two 128 GB modules for high-density server workloads
  • DDR5 4800 speed with CL40 latency delivers rated throughput for compatible platforms
  • Registered ECC architecture corrects single-bit errors and stabilises fully populated channels
  • 10 V operation matches the motherboard's voltage requirement for reliable operation
  • Verified fitment with ASRock Rack GENOA2D24G-2L+ ensures correct 288-pin RDIMM form factor

256GB DDR5-4800 ECC RDIMM Kit

This 256GB kit contains two 128GB DDR5 registered DIMMs rated at 4800 MT/s with CL40 latency and 1.1V operation. It is built for servers and workstations that require ECC error correction and registered buffering to maintain stability when all memory slots are populated.

288-pin RDIMM form factor and registered design

The modules use the 288-pin RDIMM form factor required by the ASRock Rack GENOA2D24G-2L+ motherboard. Registered architecture reduces electrical load on the memory controller, allowing full-capacity operation across populated slots, while the lack of heat spreaders keeps the profile compatible with dense server chassis.

DDR5-4800 bandwidth and population rules

The DDR5-4800 interface delivers PC5-38400 throughput, but actual capacity and speed depend on the motherboard's qualified vendor list and DIMM population order. Systems that do not support 2Rx4 registered modules at this density will not recognise the full 256GB or may fall back to lower speeds.

Highlights

  • 256 GB capacity across two 128 GB modules for high-density server workloads
  • DDR5 4800 speed with CL40 latency delivers rated throughput for compatible platforms
  • Registered ECC architecture corrects single-bit errors and stabilises fully populated channels
  • 10 V operation matches the motherboard's voltage requirement for reliable operation
  • Verified fitment with ASRock Rack GENOA2D24G-2L+ ensures correct 288-pin RDIMM form factor

Specifications

BrandNEMIX RAM
SeriesNEMIX RAM Original Series Server Memory
ModelDDR5 ECC RDIMM Registered Server Memory
Part NumberMR38400-724K2
Capacity256GB (2 x 128GB)
Type288-Pin DDR5 RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.10V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
ChipsetMajor OEM Samsung, Micron, Hynix
Heat SpreaderNo
Compatible SystemASRock Rack
FeaturesDDR5 ECC RDIMM Motherboard Compatible
Package Content256GB 2X128GB DDR5 4800MHz PC5-38400 2Rx4 1.1V 288-PIN ECC RDIMM KIT

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

What speed does the DDR5 4800 interface cap at in practice?

The modules run at DDR5 4800 (PC5 38400) with CL40 latency and 1.1V as specified for the ASRock Rack GENOA2D24G-2L+ motherboard.

What physical slot and form factor does this 288-pin RDIMM kit need to fit?

It requires 288-pin DDR5 RDIMM slots on the ASRock Rack GENOA2D24G-2L+ motherboard; it will not fit UDIMM or SODIMM sockets.

How is the 2Rx4 ECC RDIMM kit installed, and which population step is often missed?

Insert both 128GB modules into the slots listed first in the motherboard manual's population order; skipping that sequence can prevent full 256GB recognition.

Also in this aisle

People compared these

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