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
Four green 288-pin DDR5 RDIMM modules in a 512GB kit

NEMIX RAM

NEMIX RAM 512GB (4 x 128GB) DDR5 4800 PC5-38400 4Rx4 1.1V 288-Pin ECC RDIMM for Dell PowerEdge R660

SKU CH-ZS5W-APVX8

A 512 GB DDR5 ECC registered kit of four 128 GB modules at 4800 MT/s CL40, built for the Dell PowerEdge R660

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 512 GB total capacity scales virtualization and database workloads
  • Four 128 GB modules fill Dell PowerEdge R660 slots efficiently
  • DDR5 4800 speed with CL40 latency accelerates data throughput
  • ECC registered design detects and corrects errors for uptime
  • 1 V operation reduces power draw in dense server racks

Dell PowerEdge R660 server memory kit

This 512 GB kit contains four 128 GB DDR5 RDIMM modules built for the Dell PowerEdge R660 rack server. Registered ECC design targets enterprise workloads that demand data integrity and sustained throughput.

DDR5 4800 registered ECC limits

Registered buffering and ECC add latency overhead that caps maximum clock headroom compared with unbuffered alternatives. The 4Rx4 organisation further restricts rank-per-channel density on platforms with strict memory-controller limits.

4Rx4 rank configuration decides fit

Each module presents four ranks in a x4 arrangement, so the server memory controller must support 4Rx4 populations at full speed. Systems limited to dual-rank or single-rank per slot will not recognise the full 512 GB capacity.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $15,136.99
Pricier than about 92% of the 6,523 comparable items (median $188.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 91% of the 6,064 comparable items (median 32 GB).
Price per GB $29.56 per GB
Pricier than about 90% of the 6,064 comparable items (median $7.25 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 lineDell Series Server Memory
Model nameDell Compatible DDR5 ECC Registered RDIMM
Part numberMR38400-744K4
Total capacity512 GB (4 × 128 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
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.1 V

Questions about this item

Should I buy the 512GB kit as four 128GB modules or look for a different capacity?

The kit is sold as four 128GB RDIMMs totalling 512GB; each module is a 4Rx4 DDR5 4800 part so the capacity is fixed for this part number.

What does the 4800 MT/s rating actually deliver inside a PowerEdge R660?

The modules run at DDR5 4800 (PC5-38400) with CL40 latency at 1.10V, giving the maximum standard throughput the R660 memory controller supports for this rank configuration.

Is the 288-pin RDIMM interface the same as a standard DDR5 DIMM and what limits apply?

Yes, it uses the standard 288-pin DDR5 RDIMM form factor with ECC and registered buffering; the 4Rx4 organisation caps the maximum rank count per channel on the R660.

More in ECC Server RAM

Similar items