We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Two green DDR5 RDIMM modules with gold contacts, no heat spreaders

OWC

OWC 256GB (2x128GB) DDR5 4800 ECC Registered RDIMM Memory Upgrade Kit for ThinkStation P7 PX

SKU CH-SC38-XB0Q0

ECC registered DDR5 kit adds 256 GB across two 128 GB modules at 4800 MHz CL40 for ThinkStation P7 and PX workstations

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank4Rx4

Capacity 256GB (2 x 128GB)

  • ECC registered design protects data integrity in critical workloads
  • 256 GB kit (2 × 128 GB modules) expands workstation capacity
  • DDR5 4800 speed delivers high bandwidth for demanding applications
  • JEDEC-standard 1.1 V operation ensures compatibility and efficiency
  • Validated for Lenovo ThinkStation P7 and PX systems

Compatible workstation upgrade

This 256GB DDR5 memory kit is built for Lenovo ThinkStation P7 and PX workstations. It delivers registered ECC stability for professional workloads that demand data integrity and continuous uptime.

Suited for ECC registered slots only

The modules require DDR5 registered ECC slots and will not operate in standard desktop motherboards or systems that use unbuffered or load-reduced memory. Buyers needing consumer memory or mixed-rank configurations must choose a different product.

4800 MT/s registered ECC specification

The kit runs at DDR5 4800 (PC5-38400) with CL40 latency at 1.1V using 4Rx4 registered DIMMs. This speed and registration type determine whether the workstation will accept the upgrade.

How it compares

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

Price $7,318.99
Pricier than about 83% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $28.59 per GB
Pricier than about 81% of the 20,941 comparable items (median $8.19 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 number4R8D54R4256P
Total capacity256 GB (2 × 128 GB)
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank4Rx4
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

Should I pick the 256 GB kit or look for a different capacity?

This kit provides exactly 256 GB as two 128 GB modules, the only capacity offered for this ThinkStation P7 and PX upgrade.

What does the 4800 MHz rating mean once the modules are installed in my workstation?

The modules run at DDR5 4800 with CL40 latency and 1.1 V, delivering the JEDEC-standard data rate supported by the ThinkStation P7 and PX memory controller.

Does the 288-pin ECC Registered RDIMM interface limit the speed I can actually use?

The 288-pin RDIMM form factor carries the DDR5 4800 signal; the registered buffer and ECC function operate at that rated speed without further reduction.

More in Model-Specific Memory Upgrades

Similar items