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Green rectangular DDR5 RDIMM with black chips no heat spreader 288 pins

OWC

OWC 64GB DDR5 5600 CL46 2Rx4 288-pin 1.1V ECC Registered RDIMM for Lenovo ThinkSystem SD530 V3 memory upgrade

SKU CH-EPFW-WRSJV

A 64GB DDR5 5600 ECC registered RDIMM for Lenovo ThinkSystem SD530 V3 servers

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

Capacity 64GB

  • 64GB single module expands Lenovo ThinkSystem SD530 V3 capacity
  • ECC registered design protects server data integrity
  • DDR5 5600 CL46 speed matches system specifications
  • 1V operation reduces power draw
  • JEDEC compliant ensures warranty-safe upgrade

Capacity and fit

This single module provides 64GB of DDR5 memory for the Lenovo ThinkSystem SD530 V3. It is built as a 288-pin ECC Registered RDIMM with a 2Rx4 organisation and operates at 1.1V. The part is intended for server and workstation platforms that require registered ECC memory. It will not work in standard desktop computers or in systems that use unbuffered or load-reduced DIMMs.

Interface limits

The module runs at DDR5 5600 speed with a CAS latency of 46 and conforms to the PC5-44800 standard. Registered ECC memory adds a clock cycle for command buffering, so it cannot be mixed with unbuffered or load-reduced modules in the same system. JEDEC compliance ensures electrical and timing compatibility with the qualified platform. Maximum capacity and population rules are defined by the server documentation.

Pre-installation checks

Verify that the Lenovo ThinkSystem SD530 V3 supports 64GB Registered RDIMMs and the 2Rx4 rank configuration in the desired slot layout. Confirm the firmware revision meets the vendor's minimum for DDR5 5600 operation. Ensure all installed DIMMs share the same registered ECC type to avoid mixing incompatible module classes.

How it compares

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

Price $1,605.99
Pricier than about 65% 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 $25.09 per GB
Pricier than about 70% of the 20,941 comparable items (median $8.19 per GB).

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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 systemsLenovo ThinkSystem SD530 V3

Other versions of this model

5 more in the same range

Questions about this item

Should I pick the 64GB module or add multiple sticks for the ThinkSystem SD530 V3?

This is a single 64GB DDR5 5600 CL46 2Rx4 registered ECC RDIMM; the SD530 V3 accepts registered ECC DDR5, so choose the number of modules that matches your target capacity and the server's slot count.

What does the 5600 MT/s rating deliver once installed in the SD530 V3?

The module runs at DDR5 5600 (PC5-44800) with CL46 latency at 1.1V, giving the server its rated bandwidth and error-corrected throughput for workloads that the platform supports.

Is the 288-pin DDR5 ECC registered RDIMM interface the limiting factor for speed in this server?

The 288-pin registered ECC DDR5 form factor carries the 5600 MT/s signal; actual operating speed is capped by the SD530 V3's memory controller and any population rules it enforces.

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