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Green rectangular DDR5 RDIMM module with black chips on both sides, no heat spreader, gold edge contacts

OWC

OWC 64GB DDR5 5600 ECC Registered RDIMM CL46 2Rx4 288-pin 1.1V memory upgrade

SKU CH-1N5T-TXFJN

64GB DDR5 5600 ECC Registered RDIMM CL46 2Rx4 288-pin 1.1V module for Supermicro SuperServer SYS-511E-WR, SYS-521C-NR, SYS-521E-WR and SYS-521GE-TNRT

  • Total capacity64 GB
  • Rated speedDDR5 5600 (PC5 44800)
  • CAS latency46
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 64GB

  • 64GB single-module capacity scales server memory efficiently
  • ECC registered operation detects and corrects data errors automatically
  • DDR5 5600 speed with CL46 latency delivers high-throughput performance
  • 1V low voltage reduces power draw in dense configurations
  • Validated for Supermicro SuperServer SYS-511E-WR SYS-521C-NR SYS-521E-WR SYS-521GE-TNRT

Server memory upgrade

This OWC module provides 64GB of DDR5 5600 ECC registered memory in a single 288-pin RDIMM. It operates at 1.1V with CL46 latency and a 2Rx4 organisation. The part is validated for Supermicro SuperServer SYS-511E-WR, SYS-521C-NR, SYS-521E-WR and SYS-521GE-TNRT systems.

Workstation and server builds only

The module suits administrators expanding memory in the listed Supermicro platforms or similar registered-ECC DDR5 servers. It will not work in standard desktop PCs, consumer laptops or any system that requires unbuffered or load-reduced DIMMs. Buyers needing non-ECC or UDIMM memory should look elsewhere.

Verify registered ECC DDR5 support

Confirm the target system accepts 288-pin registered ECC DDR5 RDIMMs at 5600 MT/s and 1.1V. Check that the motherboard or server manual allows 2Rx4 modules of this capacity and that existing DIMMs are also registered ECC — mixing with unbuffered or LRDIMM types is not supported.

How it compares

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

Price $1,773.99
Pricier than about 67% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
CAS latency 46
Higher than about 90% of the 483 comparable items (median 22).
Price per GB $27.72 per GB
Pricier than about 77% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameOWC
Part number5R6D52R464 GB
Total capacity64 GB
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 5600 (PC5 44800)
Memory
CAS latency46
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro SuperServer SYS-511E-WR
Supermicro SuperServer SYS-521C-NR
Supermicro SuperServer SYS-521E-WR
Supermicro SuperServer SYS-521GE-TNRT

Other versions of this model

5 more in the same range

Questions about this item

What server platform must I already have to install this 64GB DDR5 5600 ECC RDIMM?

It is validated for Supermicro SuperServer SYS-511E-WR, SYS-521C-NR, SYS-521E-WR and SYS-521GE-TNRT systems.

Can I keep my existing unbuffered or load-reduced DIMMs and add this registered module?

No, the manufacturer states it cannot be mixed with unbuffered or ECC load-reduced memory.

How do I verify the module runs at 5600 MT/s with CL46 after installation?

Check the BIOS or OS memory report for DDR5-5600 speed and CAS latency 46.

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