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Two black DDR5 UDIMM modules, no heat spreaders, 64GB kit

OWC

OWC 64GB (2x32GB) DDR5 5600 CL46 ECC Unbuffered UDIMM

SKU CH-TVRQ-SRZCS

Dual-channel kit with two 32 GB DDR5 5600 CL46 ECC unbuffered UDIMMs at 1.1 V for workstations and servers

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • CAS latencyCL46
  • Rated voltage1.1 V
  • Buffer typeUnbuffered
  • Kit configurationDual Channel Kit

Capacity 64GB (2 x 32GB)

  • Dual-channel 64 GB kit expands workstation memory capacity
  • DDR5 5600 CL46 timing delivers high data throughput
  • ECC unbuffered design protects data integrity in servers
  • 1 V operation reduces power draw under load
  • 288-pin UDIMM form factor fits standard desktop slots

ECC Unbuffered UDIMM Kit

This kit provides 64 GB of DDR5 memory across two 32 GB modules. It targets workstations, servers and NAS systems that require error-correcting code for data integrity. The modules are unbuffered and operate at the standard 1.1 V JEDEC voltage. Compatibility covers desktop, all-in-one and server platforms that accept 288-pin DDR5 ECC UDIMMs.

Thermals and Power

The modules run at the nominal 1.1 V without a heat spreader, relying on case airflow for cooling. At stock DDR5 5600 speeds the power draw stays within the JEDEC baseline for unbuffered ECC DIMMs. No active cooling or additional voltage is required for standard operation.

Deciding Specification

The defining detail is the ECC unbuffered design at DDR5 5600 CL46. Only systems that specifically support unbuffered ECC DDR5 UDIMMs can use this kit; registered or non-ECC platforms will not accept it.

How it compares

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

Price $1,618.99
Pricier than about 90% 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 $25.30 per GB
Pricier than about 90% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Brand nameOWC
Part number5E6D52R8064P
Total capacity64 GB (2 × 32 GB)
Product colorBlack
Performance
Rated speedDDR5 5600 (PC5 44800)
Memory
CAS latencyCL46
ECC supportYes
Buffer typeUnbuffered
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Recommended forWorkstations, Servers, and NAS Systems
More details
LED lightingNone

Other versions of this model

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Questions about this item

Will this 64 GB DDR5 kit work in a standard desktop motherboard?

The modules are unbuffered ECC UDIMMs, so they only function on boards that explicitly support ECC unbuffered memory. Standard consumer desktops usually do not.

Does the kit require any special BIOS settings to run at 5600 MT/s?

JEDEC-standard DDR5-5600 CL46 at 1.1 V is the default profile; most compatible boards will apply it automatically without XMP or manual tuning.

Can I add these two modules alongside existing non-ECC DDR5 sticks?

Mixing ECC and non-ECC modules is not supported; all populated slots must use the same ECC type for the system to boot reliably.

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