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Two green 288-pin DDR4 RDIMM modules with black heatspreaders and gold contacts

OWC

OWC 512GB (2x256GB) DDR4 3200 CL22 8Rx4 288-pin 1.2V ECC Registered RDIMM server RAM

SKU CH-HGRR-MPRGN

512 GB DDR4 3200 CL22 ECC registered RDIMM kit (2 × 256 GB) for Supermicro MEM-DR425MI-ER32 servers

Capacity 512GB (2 x 256GB)

  • ECC registered RDIMM prevents data corruption in servers
  • 512 GB kit (2 × 256 GB) maximises memory capacity
  • DDR4 3200 MT/s CL22 delivers high throughput
  • 2 V operation lowers power draw and heat
  • 288-pin JEDEC standard ensures broad server compatibility

High-density server memory kit

This 512 GB kit ships as two 256 GB DDR4 3200 CL22 registered DIMMs built to JEDEC PC4-25600 specifications. It targets administrators who need maximum capacity per slot in Supermicro platforms that accept 8Rx4 octal-rank modules.

Sustained-load behaviour

ECC registered circuitry corrects single-bit errors on the fly while the register buffers address and command signals for electrical stability across all ranks. At 1.2 V the modules maintain rated throughput during continuous workloads without exceeding the JEDEC voltage envelope.

Replaces Supermicro MEM-DR425MI-ER32

The kit is a direct drop-in for that part number when every DIMM slot must hold 256 GB to reach the platform’s memory ceiling. The upgrade is worth it only for systems qualified for octal-rank registered ECC; consumer boards and unbuffered or load-reduced channels will not post.

How it compares

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

Price $2,752.99
Pricier than about 90% of the 6,523 comparable items (median $188.99).

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Specifications

No published specifications for this item yet.

Other versions of this model

5 more in the same range

Questions about this item

How much heat does the 3200 MHz DDR4 kit generate during continuous server operation?

Each module runs at 1.2 V and carries JEDEC-standard DDR4 specifications, so thermal output matches other PC4-25600 registered DIMMs of the same density.

What must the system already provide for these 288-pin RDIMMs to function?

A server or workstation motherboard with DDR4 RDIMM slots that support 8Rx4 registered ECC modules at 3200 MT/s and 1.2 V.

Can the 256 GB modules run alongside older DDR4 RDIMMs of different capacity or rank?

OWC recommends matching capacity, speed and manufacturer; mixing different ranks or sizes may prevent the system from training at 3200 MT/s CL22.

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