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
Green DDR5 RDIMM module, 288 pins, no heat spreader

NEMIX RAM

NEMIX RAM 32GB DDR5 4800 ECC RDIMM 2Rx8 CL40 1.1V 288-pin Lenovo 4X77A81440

SKU CH-T9NZ-16HAE

32 GB DDR5 4800 ECC registered DIMM with CL40 latency and 1.1 V operation for Lenovo ThinkSystem servers

  • Total capacity32 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 32 GB DDR5 4800 registered ECC module for Lenovo ThinkSystem servers
  • CL40 latency at 1.10 V balances speed with low power draw
  • 2Rx8 dual-rank organisation increases memory density per slot
  • 288-pin RDIMM form factor fits standard DDR5 server DIMM sockets
  • Samsung, Micron or Hynix DRAM chips validated for enterprise workloads

32 GB DDR5 RDIMM for Lenovo AMD servers

This 32 GB DDR5 4800 registered DIMM is built for Lenovo ThinkSystem servers that use AMD processors. ECC and registered buffering protect data integrity in multi-socket workloads. The single-module kit suits administrators who need to populate empty slots or replace a failed stick without buying a matched pair.

1.10 V operation keeps thermals low

Running at the standard 1.10 V, the module draws minimal power and generates little heat inside dense chassis. No heat spreader is fitted, so airflow across the bare PCB is the only cooling path. In typical server use the DIMM stays quiet and cool without extra fan speed.

Single stick simplifies capacity planning

The package contains only the 32 GB RDIMM itself, so no cables, brackets or software licences are included. IT teams can add exactly the capacity each node requires and rely on the module's validated compatibility with Lenovo part 4X77A81440. Lifetime replacement coverage backs the hardware.

How it compares

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

Price $859.99
Pricier than about 59% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $26.87 per GB
Pricier than about 74% 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 lineLenovo Server/Workstation Compatible Series Memory
Model nameLenovo DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-328K1
Total capacity32 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 rank2Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsLenovo
In the box
Included items32 GB (1 × 32 GB) DDR5 4800 MHz PC5-38400 2Rx8 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

How do I install this 288-pin DDR5 RDIMM in my Lenovo ThinkSystem and which step is most often missed?

Power down the server, open the chassis, align the module key with the slot, press firmly until both retention clips click, then verify in BIOS that the 4800 MT/s speed and ECC are active — the step most often missed is confirming the registered DIMM is recognised at full 4800 MT/s with ECC enabled

What maintenance or replacement will this 32 GB ECC RDIMM need during its service life?

No scheduled maintenance is required; the module has no heat spreader and runs at 1.10 V, so only replace it if memory diagnostics report uncorrectable ECC errors or if a capacity upgrade is needed

What limit appears first when this CL40 2Rx8 module runs sustained workloads on an AMD-based Lenovo server?

The CAS latency of CL40 at 4800 MT/s sets the primary latency boundary under sustained load, while the registered buffer and ECC overhead define the throughput ceiling before the memory controller throttles

More in Model-Specific Memory Upgrades

Similar items