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OWC

OWC 64GB DDR4 2933 ECC Registered RDIMM 2Rx4 HP Synergy 480 Gen10 660 Gen10 memory upgrade

SKU CH-CAK9-3JMXB

A single 64 GB DDR4 2933 ECC registered RDIMM for HP Synergy 480 Gen10 and 660 Gen10 servers

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

Capacity 64GB

  • 64GB capacity expands server memory headroom for virtualization
  • ECC registered design detects and corrects data errors automatically
  • DDR4 2933 CL21 speed matches HP Synergy 480 Gen10 and 660 Gen10 specs
  • 2V operation reduces power draw in dense configurations
  • Backward compatible with 2133, 2400 and 2666MHz systems

What this product is

This is a single 64GB DDR4 2933 ECC Registered RDIMM built for HP Synergy 480 Gen10 and 660 Gen10 servers. It runs at PC4-23400 with CL21 latency and 1.2V, using a 2Rx4 288-pin layout without a heat spreader.

Who this suits and who should look elsewhere

It fits administrators expanding memory in those specific Synergy compute modules or replacing the listed HP part numbers. It will not work in standard desktop PCs, consumer workstations, or any system that requires unbuffered or load-reduced DIMMs.

Capacity and headroom

One module adds 64GB of registered ECC capacity, supporting virtualization, large databases, and multi-tenant workloads. The DDR4 2933 speed is backward compatible with 2133, 2400, and 2666MHz buses, though total capacity remains limited by the server's DIMM slot count and memory controller.

Highlights

  • 64GB capacity expands server memory headroom for virtualization
  • ECC registered design detects and corrects data errors automatically
  • DDR4 2933 CL21 speed matches HP Synergy 480 Gen10 and 660 Gen10 specs
  • 2V operation reduces power draw in dense configurations
  • Backward compatible with 2133, 2400 and 2666MHz systems

Specifications

BrandOWC
Part Number2R9D42R464GB
Capacity64GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2933 (PC4 23400)
CAS LatencyCL21
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemHP Synergy 480 Gen10
HP Synergy 660 Gen10

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Does the HP Synergy 480 Gen10 server need to be running a specific BIOS version before I install this 288-pin DDR4 ECC RDIMM?

The module is designed for the HP Synergy 480 Gen10 and 660 Gen10 platforms; install it in an available DDR4 slot and the system will recognise the 64GB capacity at 2933 MT/s.

Can I mix this registered ECC RDIMM with the existing unbuffered ECC modules already in my Synergy 660 Gen10?

No, registered ECC memory cannot be mixed with unbuffered or load-reduced ECC modules; all slots must use registered DIMMs for the server to operate correctly.

After seating the module, how can I confirm the 64GB stick is running at the rated 2933 MT/s CL21?

Check the system BIOS or operating system memory report; it should show 64GB at 2933 MT/s with CL21 timings and 1.2V operation.

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