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OWC

OWC 32GB (2x16GB) DDR5 4800 CL40 ECC Registered RDIMM ThinkStation P5

SKU CH-PZ26-PHAPV

32 GB DDR5 ECC registered RDIMM kit (2 × 16 GB) at 4800 MHz CL40 for Lenovo ThinkStation P5

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank1Rx8

Capacity 32GB (2 x 16GB)

  • ECC registered design protects data integrity in workstations
  • 32 GB kit (2 x 16 GB) expands multitasking headroom
  • DDR5 4800 CL40 speed matches ThinkStation P5 spec
  • 1 V operation keeps power draw low
  • JEDEC and RoHS compliant for warranty-safe upgrades

OWC 32GB DDR5 ECC RDIMM Kit

This 32GB kit contains two 16GB DDR5 4800 CL40 registered ECC modules built for the Lenovo ThinkStation P5. Each stick runs at 1.1V with a 1Rx8 organisation and fits the 288-pin RDIMM slot. The memory is JEDEC-standard and RoHS compliant for a warranty-safe upgrade.

Replaces Slower or Smaller Registered ECC Memory

The kit upgrades a ThinkStation P5 that currently runs lower-speed DDR5 RDIMMs or has fewer than 32GB installed. The jump is worth it when workloads such as virtualization, large datasets or ECC-dependent applications need more capacity and the platform supports DDR5 4800 registered modules.

DDR5 4800 Registered ECC Limits

DDR5 4800 registered ECC modules require a platform that explicitly supports registered DIMMs and the DDR5 4800 JEDEC profile; they will not work in consumer desktop boards or in systems that only accept unbuffered or load-reduced memory. Mixing registered with unbuffered or load-reduced DIMMs is not supported.

How it compares

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

Price $806.99
Pricier than about 58% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (2 × 16 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $25.22 per GB
Pricier than about 70% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number4R8D51R8032P
Total capacity32 GB (2 × 16 GB)
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsLenovo ThinkStation P5

Other versions of this model

5 more in the same range

Questions about this item

Will the 288-pin DDR5 RDIMM modules fit the memory slots in a Lenovo ThinkStation P5?

Yes, the kit uses 288-pin DDR5 RDIMM form factor which matches the ThinkStation P5 memory slots.

What is the correct way to install the two 16 GB modules, and what step do people often miss?

Insert each module into the recommended slot pair for dual-channel operation, press down firmly until the retention clips click, and verify the BIOS reports 32 GB at 4800 MT/s.

Does the ECC registered memory require any periodic maintenance or component replacement?

No, the modules have no moving parts or heat spreaders and are designed to run continuously without user-serviceable components.

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