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Green rectangular DDR4 memory module with gold edge connectors and black chips on both sides

OWC

OWC 64GB DDR4 2933MHz ECC Registered RDIMM memory upgrade

SKU CH-J4DN-XYEXA

64GB DDR4-2933 ECC registered RDIMM for Lenovo ThinkSystem SR530, SR550, SR570, SR590 and SR670 servers

  • Total capacity64 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 64GB

  • 64 GB capacity doubles server memory headroom
  • ECC registered design corrects data errors automatically
  • 2933 MHz DDR4 speed matches Xeon SP Gen 2 platforms
  • 2 V operation reduces power draw per module
  • Validated for Lenovo ThinkSystem SR530, SR550, SR570, SR590, SR670

Server memory upgrade

This is a 64GB DDR4 2933MHz ECC registered RDIMM designed for Lenovo ThinkSystem servers with Xeon SP Gen 2 processors. It operates at 1.2V with CL21 latency and uses a 288-pin form factor. The module is built to JEDEC standards and replaces Lenovo part numbers 4X70V98063, 4ZC7A08710 and 4ZC7A08744.

Suited for ThinkSystem SR530, SR550, SR570.

This memory fits the listed Lenovo ThinkSystem models and other compatible server, workstation or NAS platforms that accept DDR4 ECC registered DIMMs. It will not work in standard desktop computers and cannot be mixed with unbuffered modules. Buyers who need non-ECC or unbuffered memory for a consumer motherboard should look elsewhere.

Verify your system requirements

Confirm that your server supports DDR4 ECC registered RDIMMs and has available 288-pin slots. The module runs at 2933MHz and is backward compatible with 2133MHz, 2400MHz and 2666MHz speeds. Check the maximum capacity per slot and total memory limit for your specific ThinkSystem model before ordering.

How it compares

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

Price $365.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $5.72 per GB
Cheaper than about 68% 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 number2R9D42R464 GB
Total capacity64 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Memory
CAS latencyCL21
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V

Other versions of this model

5 more in the same range

Questions about this item

Does my Lenovo ThinkSystem SR670 already need registered ECC DDR4 slots to accept this 288-pin RDIMM?

Yes. The module is a 288-pin DDR4 ECC Registered RDIMM and requires a server or workstation platform with registered memory slots. It will not work in standard desktop boards that use unbuffered memory.

Can I add this PC4-23400 CL21 module alongside existing 2666 MHz registered ECC DIMMs in my SR590?

The module is backward compatible with 2666 MHz, 2400 MHz and 2133 MHz speeds. When mixed, all DIMMs will run at the speed of the slowest installed module.

How can I confirm the 64 GB module is detected at 2933 MHz with ECC active after installation?

Check the system BIOS or UEFI memory configuration screen; it should show 64 GB per DIMM, 2933 MT/s (PC4-23400) and ECC Registered status.

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