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Green circuit board with black memory chips and gold edge connector

OWC

OWC 64GB DDR4 2933MHz CL21 1.2V 288pin ECC Registered RDIMM memory upgrade

SKU CH-QJS0-G0AKP

A 64GB DDR4 2933MHz ECC registered RDIMM validated for Lenovo ThinkAgile Xeon SP Gen 2 servers

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

Capacity 64GB

  • 64GB capacity expands server memory for demanding workloads
  • DDR4 2933MHz CL21 speed delivers responsive data throughput
  • ECC registered design protects data integrity in critical applications
  • 2V operation reduces power draw and heat output
  • Validated for Lenovo ThinkAgile HX7521, HX7820, HX7821, VX 1U, VX2320

64GB DDR4 2933MHz ECC Registered RDIMM

This 64GB DDR4 module runs at 2933MHz with CL21 latency and 1.2V operation. It uses a 288-pin registered DIMM form factor with ECC for data integrity. The dual-rank 2Rx4 design targets Lenovo ThinkAgile servers built on Xeon SP Gen 2 platforms.

Registered ECC requires compatible server platform

Registered ECC memory only works in server and workstation chipsets that support buffered signalling and error correction. It will not function in standard desktop motherboards and cannot be mixed with unbuffered DIMMs. The module also steps down to 2133MHz, 2400MHz or 2666MHz when the system bus requires lower speeds.

Single 64GB dual-rank module per slot

Each stick delivers 64GB in a 2Rx4 organisation, so capacity scales with the number of populated slots. Buyers needing smaller increments or unbuffered memory for desktop platforms should look elsewhere. The part replaces Lenovo numbers 4X70V98063, 4ZC7A08710 and 4ZC7A08744.

How it compares

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

Price $410.99
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 $6.42 per GB
Cheaper than about 61% 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

Should I choose the 64 GB module or a different capacity for my ThinkAgile server?

This listing provides a single 64 GB DDR4 2933 MHz CL21 ECC registered DIMM. Match the total capacity to your workload and the number of available slots in the HX or VX model you are upgrading.

What does the 2933 MHz rating mean once the module is installed in a ThinkAgile HX7521?

The module will run at up to 2933 MHz with CL21 latency at 1.2 V. If the platform operates at a lower memory speed it will automatically down-clock to 2666 MHz, 2400 MHz or 2133 MHz while keeping ECC and registered operation.

Is the DDR4 PC4-23400 interface compatible with standard desktop memory slots?

No. This is a 288-pin ECC registered RDIMM for servers and workstations. It will not fit or function in consumer desktop boards that require unbuffered non-ECC UDIMMs.

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