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

OWC

OWC 32GB DDR4 2933MHz ECC Registered RDIMM 2Rx4 CL21 1.2V for Kingston KSM29RD4/32MEI server RAM

SKU CH-4QDV-5TY21

32 GB DDR4 ECC registered RDIMM running at 2933 MHz CL21 for servers and workstations

  • Capacity32GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS LatencyCL21
  • Voltage1.2V
  • ECCYes
  • 32 GB capacity expands server memory headroom
  • DDR4 2933 MHz CL21 speed matches Kingston KSM29RD4/32MEI spec
  • ECC registered design protects data integrity in workloads
  • 2 V operation reduces power draw per module
  • Backward compatible with 2133, 2400 and 2666 MHz systems

Server-grade ECC RDIMM for workstations and NAS

This 32 GB DDR4 registered DIMM runs at 2933 MHz with CL21 latency and 1.2 V operation. It is built to JEDEC PC4-23400 specifications and carries ECC protection for data integrity. The module targets servers, workstations and NAS systems that require registered memory. It will not function in standard desktop platforms or alongside unbuffered DIMMs.

Steady throughput at rated speed under continuous

At the rated 2933 MHz the module sustains its CL21 timings without dropping to lower frequencies during prolonged workloads. ECC circuitry corrects single-bit errors on the fly while the registered buffer reduces electrical load on the memory controller. This combination keeps bandwidth stable in multi-socket servers and virtualization hosts that run memory-intensive tasks for hours.

JEDEC DDR4 limits and backward-compatible speeds

The DDR4 standard caps this design at 1.2 V and the PC4-23400 data rate, so no higher JEDEC speed grade exists for this voltage. The module will automatically clock down to 2133 MHz, 2400 MHz or 2666 MHz when paired with older controllers that do not support 2933 MHz. Mixing with unbuffered DIMMs or installing in consumer motherboards remains unsupported by the DDR4 registered specification.

Highlights

  • 32 GB capacity expands server memory headroom
  • DDR4 2933 MHz CL21 speed matches Kingston KSM29RD4/32MEI spec
  • ECC registered design protects data integrity in workloads
  • 2 V operation reduces power draw per module
  • Backward compatible with 2133, 2400 and 2666 MHz systems

Specifications

BrandOWC
Part Number2R9D42R432GB
Capacity32GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2933 (PC4 23400)
CAS LatencyCL21
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo

Questions about this item

How much power does the 1.2 V DDR4 2933 MHz module draw when the server runs continuously?

Each module operates at the standard DDR4 1.2 V, keeping power draw low even under sustained 24/7 server workloads.

What motherboard slot and memory type must the system already have for this 288-pin ECC registered RDIMM to work?

The board needs a 288-pin DDR4 slot that supports ECC registered memory; standard desktop boards that only accept unbuffered DIMMs will not work.

Will this 2933 MHz CL21 kit run stably alongside existing 2133 MHz, 2400 MHz or 2666 MHz DDR4 ECC registered modules?

Yes, the module is backward-compatible with those speeds and will run at the lowest common frequency when mixed.

Also in this aisle

People compared these

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