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
Green circuit board DDR5 memory module with black chips no heat spreader 288 pins

OWC

OWC 64GB DDR5 4800 CL40 ECC RDIMM 2Rx4 1.1V Memory Upgrade

SKU CH-QATZ-F8FZ8

64 GB DDR5-4800 ECC registered RDIMM for Lenovo ThinkSystem SR675 V3, SR850 V3, SR860 V3 and ST650 V3 servers

  • Capacity64GB
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes

Capacity 64GB

  • 64 GB capacity expands server memory for larger workloads
  • DDR5 4800 speed with CL40 latency delivers high-throughput data access
  • ECC registered design detects and corrects errors for reliable operation
  • 1 V operation reduces power draw in dense configurations
  • Validated for ThinkSystem SR675 V3, SR850 V3, SR860 V3 and ST650 V3

64GB DDR5 ECC RDIMM for ThinkSystem servers

This single 64GB DDR5 4800 module is built for Lenovo ThinkSystem SR675 V3, SR850 V3, SR860 V3 and ST650 V3 servers. It targets administrators expanding memory in those specific platforms.

Registered ECC with 2Rx4 organisation

The decisive specification is the registered ECC design with a 2Rx4 rank layout. Standard desktop boards cannot use this module and it must not be mixed with unbuffered or load-reduced DIMMs.

Tool-free DIMM insertion.

Installation is a standard DIMM seat into a 288-pin DDR5 slot. The common error is ignoring the server's required population sequence or mixing ranks, which prevents the system from posting.

Highlights

  • 64 GB capacity expands server memory for larger workloads
  • DDR5 4800 speed with CL40 latency delivers high-throughput data access
  • ECC registered design detects and corrects errors for reliable operation
  • 1 V operation reduces power draw in dense configurations
  • Validated for ThinkSystem SR675 V3, SR850 V3, SR860 V3 and ST650 V3

Specifications

BrandOWC
Part Number4R8D52R464GB
Capacity64GB
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemLenovo ThinkSystem SR675 V3
Lenovo ThinkSystem SR850 V3
Lenovo ThinkSystem SR860 V3
Lenovo ThinkSystem ST650 V3

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

What does the 4800 MT/s rating mean once the module is installed in a ThinkSystem server?

The module runs at 4800 MT/s when the platform memory controller is configured for DDR5-4800, delivering the full PC5-38400 bandwidth for each channel.

How does the ECC Registered interface affect usable capacity and speed?

The registered buffer adds one cycle of latency, reflected in the CL40 timing, while ECC corrects single-bit errors without reducing the 64 GB capacity.

Will the 288-pin RDIMM fit in a ThinkSystem SR850 V3 memory slot?

Yes, the 288-pin DDR5 RDIMM form factor matches the slots in the SR850 V3 and the other listed ThinkSystem models.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.