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Two green DDR5 RDIMM modules with gold contacts and black chips

OWC

OWC 64GB (2x32GB) DDR5 4800 CL40 ECC Registered RDIMM memory upgrade for ThinkStation P7 PX

SKU CH-DNEP-KTFJX

64GB dual-channel DDR5-4800 ECC registered RDIMM kit with CL40 latency and 1.1V operation for Lenovo ThinkStation P7 and PX workstations

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank2Rx8

Capacity 64GB (2 x 32GB)

  • 64GB total capacity from two 32GB modules
  • DDR5 4800 speed with CL40 latency
  • ECC registered design detects and corrects data errors
  • 1V operation reduces power draw
  • JEDEC and RoHS compliant for warranty-safe upgrades

ECC Registered RDIMM for ThinkStation P7 and PX

This 64GB kit provides two 32GB DDR5 4800 CL40 modules built to JEDEC standard. It is designed for Lenovo ThinkStation P7 and PX workstations that require registered ECC memory. The 1.1V 2Rx8 DIMMs deliver error correction for data integrity in professional workloads. Standard desktop systems cannot use this memory type.

Upgrade path from non-ECC

The kit replaces unbuffered or load-reduced DIMMs that the platform rejects. It is worth installing when the workstation needs registered ECC to boot or when the current capacity limits multitasking with large datasets. Mixing with unbuffered or load-reduced modules is not supported. Buyers who need unbuffered memory for consumer platforms cannot use this product.

DDR5 4800 registered DIMM constraints

The 288-pin registered interface adds one clock cycle of buffering, so the memory controller must support registered operation. Bandwidth is fixed at the JEDEC 4800 MT/s rate with CL40 latency. Systems limited to lower DDR5 speeds will downclock the modules. Builders who need higher frequencies or unbuffered DIMMs must choose a different memory type.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $1,776.99
Pricier than about 67% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $27.77 per GB
Pricier than about 78% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number4R8D52R8064P
Total capacity64 GB (2 × 32 GB)
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsLenovo ThinkStation P7
Lenovo ThinkStation PX

Other versions of this model

5 more in the same range

Questions about this item

Does the 288-pin DDR5 RDIMM fit the ThinkStation P7 and PX DIMM slots?

Yes, the 288-pin DDR5 ECC registered RDIMM form factor matches the DIMM slots in the ThinkStation P7 and PX workstations.

What is the correct way to install the two 32 GB modules, and what step is often missed?

Install both modules in the channel pair specified by the ThinkStation service guide and press firmly until the ejector tabs click; the step often missed is verifying the BIOS recognises the full 64 GB at 4800 MT/s after first boot.

Will the ECC registered modules need any firmware updates or battery replacements over time?

No firmware updates or battery replacements are required for the DDR5 ECC registered RDIMMs; they operate at 1.1 V with passive cooling and have no serviceable parts.

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