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Two green 288-pin DDR4 LRDIMM modules with gold contacts and black chips

OWC

OWC 512GB (2x256GB) DDR4 3200 CL22 ECC LRDIMM memory upgrade

SKU CH-T5QN-XDG2Z

512 GB DDR4 ECC load-reduced memory kit with two 256 GB modules running at 3200 MHz CL22 for compatible Supermicro servers

Capacity 512GB (2 x 256GB)

  • ECC load-reduced design protects data integrity in servers
  • 512 GB total capacity across two 256 GB modules
  • DDR4 3200 MHz CL22 speed with 1.2 V operation
  • 288-pin LRDIMM form factor fits Supermicro H12 series boards
  • Backward compatible with 2133, 2400, 2666 and 2933 MHz systems

Server-grade ECC LRDIMM upgrade

This kit provides 512GB of DDR4 memory in two 256GB modules built for Supermicro motherboards including H12DSG-O-CPU, H12DST-B, H12DSU-iN, H12SSL-C and H12SSL-i. The load-reduced ECC design targets workstations, servers and NAS systems that require registered error correction and cannot accept unbuffered or standard registered DIMMs. It is not suitable for desktop platforms or mixed-memory configurations.

Low-voltage operation at 1.2V

Each module runs at PC4-25600 3200MHz with CL22 latency while drawing 1.2V, matching JEDEC standard power envelopes for DDR4 LRDIMMs. Backward compatibility with 2133, 2400, 2666 and 2933MHz buses allows deployment in older slots without voltage changes. The reduced electrical load per rank helps maintain signal integrity across fully populated channels under sustained server workloads.

288-pin LRDIMM form factor

The 8Rx4 organization and 288-pin interface seat directly into compatible Supermicro DDR4 slots, enabling maximum capacity per channel without additional risers. JEDEC and RoHS compliance ensures the upgrade preserves existing system warranties. Modules are validated at component level for reliability in multi-socket environments where memory density and error correction are critical.

How it compares

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

Price $2,815.99
Pricier than about 72% of the 21,161 comparable items (median $397.99).

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Specifications

No published specifications for this item yet.

Other versions of this model

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Questions about this item

How do I install the 288-pin DDR4 LRDIMM modules on the Supermicro H12SSL-C, and what step is often missed?

Power down the server, open the chassis, align each 288-pin module with the slot key, press firmly until both retention clips click, then verify in BIOS that all 512GB are detected at 3200MHz CL22; the step often missed is confirming the motherboard firmware supports 256GB LRDIMM density before installation.

What maintenance or replacement will the 512GB DDR4 3200MHz ECC LRDIMM kit need over its service life?

The modules themselves require no scheduled maintenance; ECC corrects single-bit errors on the fly, but if a DIMM develops uncorrectable errors the server will log the fault and the affected 256GB stick must be replaced — keep a spare 256GB DDR4 3200 CL22 8Rx4 LRDIMM on hand for immediate swap.

What is the first limit reached when the 2x256GB DDR4 3200 CL22 LRDIMM kit runs sustained workloads on the H12DSU-iN?

The electrical load of eight ranks per module at 1.2V is reduced by the LRDIMM buffer, so the first practical limit is the platform maximum of 512GB across the two populated slots; beyond that you cannot add capacity without a motherboard supporting higher-density DIMMs.

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