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Two green 288-pin DDR4 LRDIMM modules with black chips

OWC

OWC 512GB (2x256GB) DDR4 2933 PC4-23400 CL21 ECC Load Reduced LRDIMM memory upgrade

SKU CH-39HF-1FMEW

A 512 GB DDR4 ECC load-reduced kit of two 256 GB modules running at 2933 MHz CL21 for Supermicro X11SPA-TF servers

Capacity 512GB (2 x 256GB)

  • ECC load-reduced design prevents data errors in servers
  • 512 GB total capacity from two 256 GB modules
  • DDR4 2933 MHz CL21 speed with backward compatibility to 2133, 2400 and 2666 MHz
  • Low 1.2 V voltage reduces power draw in dense configurations
  • 288-pin LRDIMM form factor fits Supermicro X11SPA-TF workstations

Server-grade DDR4 LRDIMM kit

This 512GB kit consists of two 256GB DDR4 2933 PC4-23400 CL21 ECC Load Reduced DIMMs. It is built for Supermicro X11SPA-TF motherboards in server, workstation and NAS deployments. Standard desktop systems cannot use this memory type.

ECC Load Reduced 8Rx4 organisation

Each module uses an 8Rx4 layout with 288 pins and operates at 1.2V. Mixing these LRDIMMs with unbuffered or standard ECC registered DIMMs is not supported. JEDEC and RoHS compliance ensures specification adherence.

Sustained 2933MHz operation with backward speeds

Rated for continuous PC4-23400 throughput at CL21, the modules also run reliably at 2666MHz, 2400MHz and 2133MHz when the platform requires lower clock rates. ECC correction maintains data integrity during extended workloads.

Punti di forza

  • ECC load-reduced design prevents data errors in servers
  • 512 GB total capacity from two 256 GB modules
  • DDR4 2933 MHz CL21 speed with backward compatibility to 2133, 2400 and 2666 MHz
  • Low 1.2 V voltage reduces power draw in dense configurations
  • 288-pin LRDIMM form factor fits Supermicro X11SPA-TF workstations

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What does 512GB of DDR4 2933 CL21 ECC Load Reduced memory provide in a real server?

This kit delivers two 256GB LRDIMMs running at 2933MHz with CL21 latency, adding 512GB of error-correcting capacity to compatible Supermicro X11SPA-TF platforms.

How does the PC4-23400 288-pin LRDIMM interface limit usable speed?

The modules operate at 2933MHz per JEDEC PC4-23400 and will down-clock to 2666MHz, 2400MHz or 2133MHz if the platform requires a lower rate.

What physical slot and voltage do these 288-pin LRDIMMs need?

Each module fits a standard DDR4 288-pin DIMM socket and runs at 1.2V; they must not be mixed with unbuffered or registered ECC DIMMs.

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