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Four green DDR4 RDIMM sticks with gold contacts and black chips

OWC

OWC 1TB (4×256GB) DDR4 3200 CL22 ECC Registered RDIMM server RAM

SKU CH-AX92-NM3HS

ECC registered DDR4 kit delivers 1 TB across four 256 GB modules at 3200 MT/s CL22 for compatible servers

Capacity 1TB (4 x 256GB)

  • ECC registered design prevents data corruption in servers
  • 3200 MHz DDR4 speed handles heavy workloads
  • 1TB total capacity across four 256GB modules
  • 2V operation reduces power draw in dense configs
  • 288-pin RDIMM form factor fits standard server slots

1 TB ECC Registered Server Kit

This kit supplies one terabyte of DDR4 3200 memory across four 256 GB modules. It targets administrators upgrading Supermicro platforms that require ECC registered RDIMMs. The CL22 octal-rank design meets JEDEC PC4-25600 specifications for enterprise workloads. Compatibility is limited to systems that accept registered ECC memory.

Tool-free DIMM installation

Each 288-pin module seats in standard DDR4 RDIMM slots without special tools. The 1.2 V operating voltage matches server platform expectations. Mixing these registered sticks with unbuffered or load-reduced ECC DIMMs will prevent boot or cause instability. Verify that every slot receives an identical 256 GB module for correct operation.

Suits Supermicro MEM-DR425MI-ER32 replacements

Ideal for IT teams extending the life of qualified Supermicro servers or building new nodes that specify this exact part number. Not suitable for standard desktop motherboards, workstations requiring unbuffered ECC, or any platform that cannot address octal-rank registered DIMMs. Buyers needing different capacities, ranks, or voltages should select a matched kit validated for their specific hardware.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $6,114.99
Pricier than about 90% of the 6,523 comparable items (median $188.99).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

No published specifications for this item yet.

Other versions of this model

5 more in the same range

Questions about this item

How can I verify the 3200 MT/s speed and CL22 timing are active after installing the four 256 GB RDIMMs?

Enter the server BIOS or UEFI and confirm the memory runs at 3200 MT/s with CL22 latency; the POST screen or system management console will show each 288-pin module detected at 1.2 V.

What ships in the package and what must be sourced separately?

The kit contains four 256 GB DDR4 ECC Registered RDIMMs totalling 1 TB; no cables, heatsinks or additional hardware are included.

Which capacity configuration should I select for a Supermicro system requiring MEM-DR425MI-ER32?

Choose the 1 TB kit (4 × 256 GB) as it directly replaces the Supermicro MEM-DR425MI-ER32 part with matching 3200 MT/s, CL22, 8Rx4 registered specifications.

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