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Two green DDR4 ECC registered DIMMs, 288-pin, no heat spreader

OWC

OWC 2R4D42R4064P 64GB (2x32GB) DDR4 2400 CL17 ECC Registered RDIMM 1.2V 288-pin Server RAM

SKU CH-RXK7-03S2T

ECC registered dual-channel kit with two 32 GB DDR4-2400 CL17 modules for servers and workstations

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 64GB (2 x 32GB)

Show 2 more

Rank 2Rx4

  • ECC protection prevents data errors in critical workloads
  • Dual-channel 64 GB kit boosts multitasking headroom
  • Registered DDR4 2400 CL17 meets JEDEC server specs
  • Low 1.2 V operation reduces power draw per module
  • 288-pin RDIMM form factor fits standard server slots

Server DDR4 ECC RDIMM

This OWC kit delivers 64GB of DDR4 2400 memory in two 32GB registered DIMMs. It is built for servers, workstations and NAS systems that require ECC error correction. Standard desktop boards cannot use registered modules, so this kit will not work in consumer PCs.

Registered DDR4 limits

Registered DIMMs add a clock cycle of buffering that stabilises heavy memory loads on multi-socket platforms. The same buffering prevents the modules from functioning in unbuffered desktop chipsets. Mixing registered and unbuffered memory is not supported and will prevent boot.

Build and daily use

The modules use a 288-pin DDR4 form factor without heat spreaders, keeping height low for dense server chassis. JEDEC and RoHS compliance ensures compatibility with OEM-qualified platforms. Dual-rank 2Rx4 organisation fits standard server memory population rules.

How it compares

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

Price $433.99
Pricier than about 68% of the 6,523 comparable items (median $188.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 70% of the 6,064 comparable items (median 32 GB).
Price per GB $6.78 per GB
Cheaper than about 55% 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 nameOWC
Part number2R4D42R4064P
Total capacity64 GB (2 × 32 GB)
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2400 (PC4 19200)
Memory
CAS latencyCL17
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.2 V

Other versions of this model

5 more in the same range

Questions about this item

Should I pick the 64 GB dual-channel kit or buy single 32 GB modules instead?

The 64 GB kit provides two matched 32 GB modules tested together for dual-channel operation, which is the simplest way to reach 64 GB with guaranteed compatibility.

Will the 2400 MHz CL17 rating deliver that speed in my server?

The modules run at 2400 MHz with CL17 latency when the platform supports DDR4-2400; otherwise they down-clock to the highest speed the memory controller allows.

Is the 288-pin DDR4 RDIMM interface compatible with my workstation board?

The 288-pin ECC registered DDR4 RDIMM fits server and workstation slots that accept registered memory; it will not work in desktop boards that require unbuffered DIMMs.

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