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
Single green 288-pin DDR4 ECC RDIMM module with black chips, no heat spreader

OWC

OWC 128GB DDR4 2933 ECC RDIMM CL21 8Rx4 1.2V Lenovo ThinkAgile VX memory upgrade

SKU CH-K7BN-139QQ

128 GB DDR4 2933 ECC registered RDIMM for Lenovo ThinkAgile VX servers

  • Total capacity128 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latency21
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank8Rx4
  • 128 GB single module expands server memory capacity
  • ECC registered design protects data integrity in critical workloads
  • DDR4 2933 CL21 at 1.2 V balances speed and efficiency
  • Validated for Lenovo ThinkAgile VX 2U4N VX2320 VX3320 VX3520-G VX3720
  • Backward compatible with 2133 2400 2666 MHz systems

Server-grade memory upgrade

This 128GB DDR4 2933 ECC registered DIMM is built for Lenovo ThinkAgile VX servers running Xeon SP Gen 2 processors. The module targets administrators who need to expand memory capacity in 2U4N nodes such as the VX2320, VX3320, VX3520-G and VX3720.

JEDEC compliance and backward compatibility

The stick meets JEDEC PC4-23400 CL21 specifications at 1.2V and will also operate at 2133, 2400 and 2666 MHz when the platform requires lower speeds. ECC registered operation prevents data corruption in multi-socket workloads and the module cannot be mixed with unbuffered or load-reduced DIMMs.

288-pin registered form factor

A single 128GB rank-8Rx4 module plugs directly into the server's DDR4 slots without a heat spreader, keeping clearance tight for dense 2U chassis. Registered signalling reduces electrical load on the memory controller, allowing full population of all slots in supported ThinkAgile VX configurations.

How it compares

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

Price $689.99
Pricier than about 56% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB
Higher than about 70% of the 20,941 comparable items (median 32 GB).
CAS latency 21
Lower than about 63% of the 483 comparable items (median 22).
Price per GB $5.39 per GB
Cheaper than about 71% 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 number2R9D48R4128G
Total capacity128 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Memory
CAS latency21
ECC supportYes
Buffer typeRegistered
Memory rank8Rx4
Heat spreaderNo
Power
Rated voltage1.2 V

Questions about this item

Will the 8Rx4 rank configuration require any future firmware updates on the Lenovo ThinkAgile VX2320?

The module follows JEDEC DDR4 standards and is designed to meet OEM specifications, so no rank-specific firmware updates are needed for the VX2320.

What thermal limit appears first when the 128GB RDIMM runs continuously at 2933MHz in a 2U4N chassis?

The 1.2V DDR4 module operates within standard JEDEC thermal limits; the registered buffer and ECC logic maintain stability before any temperature threshold is reached.

How much power does the 288-pin ECC registered DIMM draw during all-day operation at 1.2V?

At 1.2V the module consumes only the power defined by the DDR4 2933 JEDEC specification, keeping heat output low in the VX3320 or VX3520-G.

More in Model-Specific Memory Upgrades

Similar items