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Four green DDR5 ECC registered RDIMM modules in a row

OWC

OWC 128GB (4x32GB) DDR5 4800 PC5-38400 CL40 2Rx8 288-pin 1.1V ECC Registered RDIMM for ThinkStation P7 PX

SKU CH-NVH4-B1QKP

128 GB kit of four 32 GB DDR5 ECC registered RDIMMs at 4800 MT/s CL40, 1.1 V, validated for ThinkStation P7 and PX workstations

  • Capacity128GB (4 x 32GB)
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes

Capacity 128GB (4 x 32GB)

  • 128 GB total capacity from four 32 GB modules
  • DDR5 4800 speed with CL40 latency for workstation performance
  • ECC registered design detects and corrects data errors
  • 1 V operation meets JEDEC standard for DDR5 RDIMMs
  • Validated for Lenovo ThinkStation P7 and PX systems

128GB DDR5 4800 ECC Registered Kit

This 128GB kit contains four 32GB DDR5 4800 PC5-38400 CL40 registered DIMMs. It is built for Lenovo ThinkStation P7 and PX workstations that require ECC registered memory. The modules operate at 1.1V and use a 2Rx8 organisation. They are JEDEC-standard and RoHS compliant.

Workstation and server upgrades only

This memory suits IT professionals upgrading or repairing ThinkStation P7 and PX systems. It will not work in standard desktop computers or consumer motherboards. It cannot be mixed with unbuffered or load-reduced ECC modules. Buyers needing non-ECC or unbuffered DDR5 for a regular PC should look elsewhere.

Registered ECC is the deciding spec

The modules are ECC registered RDIMMs, a requirement for the ThinkStation P7 and PX memory controllers. Standard unbuffered DIMMs will not function in these workstations. Verify that your system specifically calls for registered ECC DDR5 before ordering this kit.

Highlights

  • 128 GB total capacity from four 32 GB modules
  • DDR5 4800 speed with CL40 latency for workstation performance
  • ECC registered design detects and corrects data errors
  • 1 V operation meets JEDEC standard for DDR5 RDIMMs
  • Validated for Lenovo ThinkStation P7 and PX systems

Specifications

BrandOWC
Part Number4R8D52R8128S
Capacity128GB (4 x 32GB)
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx8
Heat SpreaderNo
Compatible SystemLenovo ThinkStation P7
Lenovo ThinkStation PX

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Questions about this item

Should I choose the 4×32 GB kit or look for a different capacity?

The kit supplies 128 GB total across four 32 GB registered ECC modules, which matches the maximum supported configuration for the ThinkStation P7 and PX workstations.

What does the DDR5 4800 CL40 rating deliver in my ThinkStation P7 or PX?

Each module runs at 4800 MT/s with CAS latency 40 at 1.1 V, providing the standard JEDEC DDR5 speed grade qualified for those workstations.

How does the 288-pin registered ECC DDR5 interface limit performance?

The registered ECC RDIMM format adds one clock cycle of buffering for signal integrity, capping the memory to JEDEC-standard DDR5 4800 speeds without overclocking headroom.

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