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Green rectangular DDR4 RDIMM module with gold contacts and black chips on both sides

OWC

OWC 64GB DDR4 2933MHz CL21 ECC Registered RDIMM 2Rx4 memory upgrade

SKU CH-KWAK-SZX3D

64 GB DDR4 2933 MHz ECC registered RDIMM for Supermicro X11 server motherboards

  • Capacity64GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS LatencyCL21
  • Voltage1.2V
  • ECCYes

Capacity 64GB

  • 64 GB capacity doubles server memory headroom
  • ECC registered design corrects errors for data integrity
  • 2933 MHz DDR4 speed with CL21 latency
  • 2 V operation reduces power draw per module
  • Validated for Supermicro X11SRi-IF, X11SRL-F, X11SRM-F, X11SRM-VF

Server-grade ECC RDIMM for Supermicro X11

This OWC 64GB DDR4 2933MHz CL21 module is a registered ECC RDIMM built for Supermicro X11SRi-IF, X11SRL-F, X11SRM-F and X11SRM-VF motherboards. It targets administrators upgrading workstation, server or NAS platforms that require registered memory with error correction. The single 64GB stick runs at 1.2V and uses a 2Rx4 organisation.

Registered ECC design prevents mixing

The registered buffer and ECC circuitry change how the memory controller is driven, so this module cannot be combined with unbuffered DIMMs in the same system. Backward compatibility with 2133MHz, 2400MHz and 2666MHz buses lets the stick clock down when installed alongside slower modules or on platforms that do not support the full 2933MHz data rate. No heat spreader is fitted, leaving the DRAM exposed for maximum airflow in dense chassis.

Verify motherboard model

Confirm the exact Supermicro X11 model listed above, because registered ECC RDIMMs are not compatible with standard desktop boards or consumer chipsets. Check how many 288-pin DDR4 slots remain free and whether the platform supports 2Rx4 ranks at the intended capacity per channel. The module replaces Supermicro part numbers MEMDR464LCL01ER29, MEMDR464LHL02ER29, MEMDR464LSL01ER29 and MEM-DR464MC-ER29.

Points forts

  • 64 GB capacity doubles server memory headroom
  • ECC registered design corrects errors for data integrity
  • 2933 MHz DDR4 speed with CL21 latency
  • 2 V operation reduces power draw per module
  • Validated for Supermicro X11SRi-IF, X11SRL-F, X11SRM-F, X11SRM-VF

Caractéristiques

BrandOWC
Part Number2R9D42R464GB
Capacity64GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2933 (PC4 23400)
CAS LatencyCL21
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemSupermicro Motherboard X11SRi-IF
Supermicro Motherboard X11SRL-F
Supermicro Motherboard X11SRM-F
Supermicro Motherboard X11SRM-VF

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Questions sur cet article

Does the 64GB DDR4 2933MHz CL21 1.2V 288pin ECC Registered RDIMM require any maintenance or replacement later?

The module has no heat spreader and no moving parts, so it needs no routine maintenance; it is only replaced if a DIMM fails or the server is upgraded to a different memory standard.

What limit appears first when the 64GB DDR4 2933MHz CL21 1.2V 288pin ECC Registered RDIMM runs under sustained load?

The registered buffer and ECC logic add a small latency overhead, so the memory controller’s maximum supported rank count per channel is typically reached before bandwidth or thermal limits.

How much noise, heat or power does the 64GB DDR4 2933MHz CL21 1.2V 288pin ECC Registered RDIMM produce when running all day?

At 1.2 V the module draws only a few watts, runs silently with no fan, and its bare PCB dissipates heat passively into the server’s airflow without raising chassis temperatures.

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