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Two black rectangular DDR4 UDIMM sticks with gold edge connectors and black chips, no heat spreader, no LEDs

OWC

OWC 64GB (2x32GB) DDR4 3200MHz CL22 ECC Unbuffered UDIMM desktop RAM

SKU CH-XR17-77XMG

A 64GB dual-channel DDR4 kit running at 3200MHz with ECC error correction for workstations and servers

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Kit configurationDual Channel Kit

Capacity 64GB (2 x 32GB)

  • ECC protection guards data integrity in critical workloads
  • 64GB dual-channel kit expands multitasking headroom for workstations
  • 3200MHz CL22 speed delivers responsive throughput at standard voltage
  • JEDEC-compliant 1.2V modules ensure broad platform compatibility
  • Backward compatible with 2133, 2400, 2666 and 2933MHz systems

Capacity and Kit

This kit provides 64GB of DDR4 memory across two 32GB modules for dual-channel operation. It is intended for workstations, servers and NAS systems that require error-correcting code support. The modules run at 3200MHz with a CL22 latency at 1.2V.

Build Fit

The 288-pin unbuffered ECC UDIMMs install in standard desktop DDR4 slots and operate at the JEDEC 1.2V baseline. Backward compatibility covers 2133MHz, 2400MHz, 2666MHz and 2933MHz platforms. No heat spreader is fitted, so clearance around adjacent components is not increased.

Headroom and Limits

The 64GB capacity suits heavy multitasking, large datasets and virtualisation workloads. ECC protects data integrity in always-on server and NAS roles. Speed tops out at 3200MHz; systems that demand higher frequencies or registered modules will need different memory.

How it compares

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

Price $498.99
Pricier than about 85% of the 3,647 comparable items (median $90.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 90% of the 3,251 comparable items (median 16 GB).
Price per GB $7.80 per GB
Pricier than about 57% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Brand nameOWC
Part number3E2D42R8064P
Total capacity64 GB (2 × 32 GB)
Product colorBlack
Performance
Rated speedDDR4 3200 (PC4 25600)
Memory
CAS latencyCL22
ECC supportYes
Buffer typeUnbuffered
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Recommended forWorkstations, Servers, and NAS Systems
More details
LED lightingNone

Other versions of this model

5 more in the same range

Questions about this item

How much capacity does the 2RX8 ECC unbuffered kit provide for sustained workloads?

The kit delivers 64GB total from two 32GB modules, giving workstations and NAS systems the headroom to keep large datasets in memory without swapping.

What is the operating voltage and thermal profile of these DDR4 3200MHz CL22 modules during all-day operation?

Each DIMM runs at 1.2V with no heat spreader, so power draw and heat output stay low even under continuous load in servers or workstations.

Which motherboard slot and memory standard must the system already support for this 288-pin UDIMM kit to function?

The platform needs DDR4 288-pin UDIMM slots that accept ECC unbuffered memory; the modules are backward compatible with 2133, 2400, 2666 and 2933MHz speeds.

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