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Green 288-pin DDR4 ECC registered DIMM module with black chips, no heat spreader

OWC

OWC 64GB DDR4 2933MHz ECC RDIMM Lenovo P520 P520c memory upgrade

SKU CH-B8NB-ZQMHT

64 GB DDR4 ECC registered DIMM running at 2933 MHz CL21 for Lenovo ThinkStation P520 and P520c workstations

  • Capacity64GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS LatencyCL21
  • Voltage1.2V
  • ECCYes

Capacity 64GB

  • 64 GB capacity doubles workstation memory headroom
  • DDR4 2933 MHz CL21 speed matches Lenovo P520 spec
  • ECC registered design protects data integrity in servers
  • 2 V operation reduces power draw and heat
  • Backward compatible with 2133, 2400 and 2666 MHz systems

64GB ECC RDIMM for Lenovo Workstations

This 64GB DDR4 2933MHz ECC Registered DIMM is built for Lenovo ThinkStation P520 and P520c systems. It targets professionals who need error-correcting memory for data integrity in workstation and server environments. The module operates at 1.2V with CL21 latency and uses a 288-pin form factor. Buyers with standard desktop PCs cannot use this registered memory.

Capacity and headroom at 2933MHz

A single 64GB module provides substantial memory headroom for virtualisation, large datasets and multi-application workflows. The PC4-23400 rating delivers 2933MHz speed while maintaining backward compatibility with 2133MHz, 2400MHz and 2666MHz platforms. Registered buffering adds a clock cycle of latency, so workloads sensitive to raw latency may see reduced benefit compared to unbuffered alternatives.

Build integration and compatibility

Installation requires a Lenovo ThinkStation P520 or P520c motherboard that supports DDR4 ECC Registered DIMMs. The module replaces Lenovo part numbers 4X70V98063, 4ZC7A08710 and 4ZC7A08744 directly. It cannot be mixed with unbuffered memory, so all slots must use registered ECC modules. No heat spreader is fitted, leaving clearance for dense CPU cooler configurations.

Points forts

  • 64 GB capacity doubles workstation memory headroom
  • DDR4 2933 MHz CL21 speed matches Lenovo P520 spec
  • ECC registered design protects data integrity in servers
  • 2 V operation reduces power draw and heat
  • Backward compatible with 2133, 2400 and 2666 MHz systems

Caractéristiques

BrandOWC
Part Number2R9D42R464GB
Capacity64GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2933 (PC4 23400)
CAS LatencyCL21
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemLenovo ThinkStation P520
Lenovo ThinkStation P520c

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Questions sur cet article

Will this 64GB DDR4 2933MHz ECC RDIMM work alongside my existing 2133MHz modules in the ThinkStation P520?

The module is backward compatible with 2133MHz, 2400MHz and 2666MHz speeds, so it will run at the speed of the slowest installed DIMM. All sticks must be ECC registered; mixing with unbuffered memory is not supported.

How can I confirm the 64GB ECC registered DIMM is detected and running at 2933MHz CL21 after installation?

Enter the system BIOS or UEFI and check the memory information screen; it should show 64GB total capacity, DDR4-2933 speed, CL21 latency, 1.2V voltage and ECC registered status.

Does the single 288-pin RDIMM ship with a heat spreader or any extra cables, and what else must I buy?

The module has no heat spreader and includes only the DIMM itself. No cables or brackets are required; purchase additional identical 64GB ECC registered RDIMMs if you need more capacity.

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