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Green 288-pin DDR4 LRDIMM module with black chips

OWC

OWC 256GB DDR4 2933 PC4-23400 CL21 8Rx4 ECC Load Reduced LRDIMM memory upgrade

SKU CH-6ZP7-S4BZ6

A single 256 GB DDR4 ECC load-reduced DIMM running at 2933 MHz CL21 for Supermicro X11 server and workstation boards

Capacity 256GB

  • Massive 256 GB capacity in a single module
  • DDR4 2933 MHz CL21 speed for responsive server workloads
  • ECC load-reduced design protects data integrity in critical systems
  • JEDEC-standard 1.2 V operation keeps power draw low
  • Backward compatible with 2133, 2400 and 2666 MHz platforms

256 GB DDR4 LRDIMM for Supermicro servers

This single 256 GB module uses DDR4 technology at 2933 MHz with CL21 latency and an 8Rx4 organisation. It is an ECC Load Reduced DIMM built for workstations, servers and NAS systems that require registered memory. The 288-pin form factor operates at 1.2 V and follows JEDEC PC4-23400 specifications.

Installation notes and common issues

The module fits standard 288-pin DDR4 slots and is keyed for Load Reduced memory only. It will not work in desktop boards that accept unbuffered or standard registered DIMMs, and mixing it with those types prevents the system from posting. Backward compatibility covers 2133, 2400 and 2666 MHz speeds, so the DIMM will down-clock automatically when paired with slower memory controllers.

Suitable for high-capacity server builds.

This upgrade suits administrators expanding memory in Supermicro X11DPD-L, X11DPD-M25, X11DPFF-SNR, X11QPL or X11SPA-T platforms. It is not intended for consumer desktop PCs, laptops or any system that does not explicitly support ECC Load Reduced DIMMs. Buyers needing unbuffered or standard registered memory should look at a different product class.

How it compares

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

Price $1,558.99
Pricier than about 65% of the 21,161 comparable items (median $397.99).

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 confirm the 256GB LRDIMM is running at 2933MHz CL21 after installation?

Check the BIOS or UEFI memory information screen; it should report DDR4 PC4-23400 2933MHz CL21 for the installed module.

What comes with the 256GB DDR4 ECC Load Reduced DIMM and do I need anything else to install it?

The package contains one 256GB 288-pin LRDIMM; no extra parts are required if your Supermicro motherboard has a free DDR4 ECC LRDIMM slot.

Should I choose the 256GB PC4-23400 CL21 module or a lower-speed DDR4 ECC LRDIMM for my Supermicro X11 board?

The 256GB PC4-23400 CL21 module is backward compatible with 2133MHz, 2400MHz and 2666MHz systems, so it works at the highest speed your board supports.

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