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 DDR4 ECC registered DIMMs 288-pin 1.2V

OWC

OWC 256GB (4x64GB) DDR4 2933 ECC RDIMM H12SST-PS

SKU CH-73GE-2ASJ7

A 256 GB kit of four 64 GB DDR4 2933 ECC registered DIMMs for Supermicro H12SST-PS servers

  • Capacity256GB (4 x 64GB)
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS LatencyCL21
  • Voltage1.2V
  • ECCYes

Capacity 256GB (4 x 64GB)

  • ECC registered design protects data integrity in servers
  • 256GB total capacity across four 64GB modules
  • DDR4 2933 speed with CL21 latency at 1.2V
  • Qualified for Supermicro H12SST-PS motherboard
  • Backward compatible with 2133, 2400 and 2666 speeds

Server-grade DDR4 ECC kit

This 256GB kit contains four 64GB DDR4 2933 ECC registered DIMMs built for the Supermicro H12SST-PS motherboard. It targets administrators who need maximum registered capacity in a supported four-module configuration. The modules operate at 1.2V with CL21 latency and 2Rx4 organisation. They are not compatible with standard desktop platforms or unbuffered memory.

288-pin registered form factor

Each module uses the 288-pin RDIMM layout required by server chipsets and includes on-board register circuitry for signal integrity at high density. The absence of a heat spreader keeps the profile low for dense chassis layouts. Registered buffering means these DIMMs cannot be mixed with unbuffered or load-reduced memory in the same system. Installation follows standard server DIMM seating procedures.

DDR4 2933 with backward steps

The kit runs natively at 2933 MT/s (PC4-23400) and will down-clock to 2666, 2400 or 2133 MT/s when the platform demands it. Total capacity is fixed at 256GB across the four slots populated by this kit. Builders needing more memory must use a motherboard with additional DIMM slots or higher-density modules not included here.

Highlights

  • ECC registered design protects data integrity in servers
  • 256GB total capacity across four 64GB modules
  • DDR4 2933 speed with CL21 latency at 1.2V
  • Qualified for Supermicro H12SST-PS motherboard
  • Backward compatible with 2133, 2400 and 2666 speeds

Specifications

BrandOWC
Part Number2R9D42R4256S
Capacity256GB (4 x 64GB)
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2933 (PC4 23400)
CAS LatencyCL21
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemSupermicro Motherboard H12SST-PS

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 DDR4 standard and speed does this kit use, and what does that cap in practice?

The kit runs at DDR4 2933 (PC4-23400) with CL21 latency and 1.2V; the motherboard's memory controller limits the actual data rate, so it will not exceed 2933 MT/s.

What physical slot and form factor do these modules need on the Supermicro H12SST-PS?

They require 288-pin DDR4 RDIMM slots; each module is a 64 GB 2Rx4 registered DIMM without a heat spreader.

How are the four modules installed, and what step do people often get wrong?

Populate all four slots following the board's channel order; the common mistake is mixing these registered ECC DIMMs with unbuffered or load-reduced memory, which the board will not accept.

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

Also in this aisle

People compared these

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