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Green rectangular DDR4 RDIMM module with black chips and gold contacts

OWC

OWC 128GB DDR4 2933MHz CL21 1.2V 288pin ECC RDIMM Server Memory Upgrade

SKU CH-5V5Q-8B6SJ

128 GB DDR4 ECC registered DIMM running at 2933 MHz CL21 for select Supermicro server boards

  • Capacity128GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS LatencyCL21
  • Voltage1.2V
  • ECCYes

Capacity 128GB

  • 128GB capacity supports large server workloads
  • DDR4 2933MHz CL21 delivers registered ECC reliability
  • 2V operation reduces power draw in dense configurations
  • 288-pin RDIMM fits Supermicro X11SP series motherboards
  • Backward compatible with 2133, 2400 and 2666MHz systems

Server ECC RDIMM for Supermicro X11SP Series

This 128GB DDR4 2933MHz CL21 module is a registered ECC RDIMM built for Supermicro X11SPi-TF, X11SPL-F, X11SPM-F, X11SPM-TF and X11SPM-TPF motherboards. It targets administrators upgrading workstations, servers or NAS systems that require registered memory with error correction. The 1.2V 288-pin DIMM replaces Supermicro part numbers MEMDR412LSL01ER29 and MEM-DR412MH-ER29.

DDR4 2933MHz registered ECC limits

The module operates at PC4-23400 with CL21 latency and is backward compatible with 2133MHz, 2400MHz and 2666MHz bus speeds. Registered ECC memory cannot be mixed with unbuffered modules and will not function in standard desktop platforms that lack registered DIMM support. The 4Rx4 organisation and lack of a heat spreader are fixed characteristics of this part.

Verify motherboard model and memory population rules

Confirm your board is one of the five listed X11SP models before ordering, as compatibility is limited to those specific part numbers. Check the system documentation for maximum supported capacity per slot and per channel, and for any population order requirements when installing a 128GB 4Rx4 module. Ensure the platform accepts registered ECC DDR4 at 1.2V.

Privalumai

  • 128GB capacity supports large server workloads
  • DDR4 2933MHz CL21 delivers registered ECC reliability
  • 2V operation reduces power draw in dense configurations
  • 288-pin RDIMM fits Supermicro X11SP series motherboards
  • Backward compatible with 2133, 2400 and 2666MHz systems

Specifikacijos

BrandOWC
Part Number2R9D44R4128G
Capacity128GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2933 (PC4 23400)
CAS LatencyCL21
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
Heat SpreaderNo
Compatible SystemSupermicro Motherboard X11SPi-TF
Supermicro Motherboard X11SPL-F
Supermicro Motherboard X11SPM-F
Supermicro Motherboard X11SPM-TF
Supermicro Motherboard X11SPM-TPF

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Should I choose the 128GB module or combine smaller capacities?

This single 128GB DDR4 2933MHz CL21 ECC RDIMM delivers the full capacity in one 288-pin registered module, avoiding the need to populate multiple slots on your Supermicro X11SP series motherboard.

What does the 2933MHz rating mean once the module is installed in my server?

The module runs at 2933MHz (PC4-23400) with CL21 latency at 1.2V; it will also operate at 2133MHz, 2400MHz or 2666MHz if the platform requires a lower speed.

What does the DDR4 288-pin ECC Registered interface limit in practice?

The 288-pin DDR4 ECC RDIMM form factor fits only server and workstation boards that support registered memory; it cannot be used in standard desktop systems or mixed with unbuffered modules.

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