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Four green DDR4 RDIMM modules with gold contacts and black chips

OWC

OWC 128GB (4×32GB) DDR4 2400 CL17 ECC Registered RDIMM memory upgrade

SKU CH-6N74-4P9ET

128 GB ECC registered DDR4 kit of four 32 GB modules at 2400 MHz CL17 for Cisco UCS B260 M4 and B460 M4 servers

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 128GB (4 x 32GB)

  • 128 GB total capacity with four 32 GB modules
  • ECC registered design protects data integrity in servers
  • DDR4 2400 MHz CL17 speed for responsive performance
  • 2 V low-voltage operation reduces power draw
  • Qualified for Cisco UCS B260 M4 and B460 M4

Server-grade ECC RDIMM kit

This OWC kit provides 128GB of DDR4 2400 CL17 memory across four 32GB registered DIMMs. Each module is a 2Rx4 288-pin unit operating at 1.2V with full ECC error correction. The kit is validated for Cisco UCS B260 M4 E7 v4 and B460 M4 E7 v4 servers and workstations where registered memory is mandatory.

Replaces Cisco HXMR1X322RVA modules

The kit directly substitutes Cisco part numbers HXMR1X322RVA, HXSPM32RVA, UCSMR1X322RVA, UCSMR1X322RVARF and UCSMR1X322RVAS. The upgrade is justified when the existing configuration cannot hold the working set or when additional virtual machines require more capacity. It will not work in systems that require unbuffered or load-reduced DIMMs.

Sustained load stability with ECC

Registered buffering and ECC protect data integrity during continuous server workloads such as database transactions or virtualisation hosting. The modules run at standard JEDEC 1.2V without overclocking, so thermal output remains predictable in densely populated chassis. Buyers needing consumer desktop memory or higher-frequency modules should look elsewhere.

How it compares

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

Price $895.99
Pricier than about 60% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $7.00 per GB
Cheaper than about 57% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number2R4D42R4128S
Total capacity128 GB (4 × 32 GB)
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2400 (PC4 19200)
Memory
CAS latencyCL17
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsCisco UCS B260 M4 E7 v4
Cisco UCS B460 M4 E7 v4

Other versions of this model

5 more in the same range

Questions about this item

Does the 288-pin DDR4 RDIMM fit the Cisco UCS B260 M4 E7 v4 and B460 M4 E7 v4 memory slots?

Yes, the 288-pin DDR4 RDIMM matches the slot layout of both the Cisco UCS B260 M4 E7 v4 and B460 M4 E7 v4 servers.

What is the correct way to seat the four 32 GB modules so the registered ECC memory initialises properly?

Insert each module vertically until the retention clips click on both ends; the registered buffer requires firm, even pressure or the server will not POST.

When should the 2Rx4 ECC registered DIMMs be replaced if correctable error counts start rising?

Replace the kit when the platform logs show increasing correctable ECC errors, as the 2Rx4 registered modules cannot be repaired in the field.

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