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Green rectangular circuit board with gold edge connectors and black memory chips

OWC

OWC 32GB DDR4 2666MHz ECC Registered RDIMM for Lenovo ThinkSystem SR550 SR570 SR590 SR630 SR650

SKU CH-N6MJ-K9JQD
  • Capacity32GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes
  • 32GB capacity lets you run larger workloads on compatible Lenovo ThinkSystem servers
  • ECC registered design detects and corrects data errors for reliable server operation
  • DDR4 2666MHz CL19 speed delivers responsive performance for Xeon SP Gen 1 platforms
  • 2V low-voltage operation reduces power draw in SR550 SR570 SR590 SR630 SR650 systems
  • Backward compatible with 2133MHz and 2400MHz speeds for flexible deployment

Server ECC RDIMM for Lenovo ThinkSystem

This 32GB DDR4 2666MHz module is built for Lenovo ThinkSystem SR550, SR570, SR590, SR630 and SR650 servers. It delivers registered ECC reliability for workloads that cannot tolerate data corruption. The part replaces Lenovo numbers 4X70P98203 and 7X77A01304. It is not compatible with standard desktop computers.

288-pin registered DIMM without heat spreader

The module uses a 288-pin DDR4 form factor and operates at 1.2V with CL19 latency. Registered buffering reduces electrical load on the memory controller, allowing larger configurations in multi-socket Xeon systems. No heat spreader is fitted, so airflow in the server chassis handles cooling. Mixing with unbuffered memory is not supported.

32GB capacity at DDR4 2666 CL19

Each stick provides 32GB in a 2Rx4 organisation running at PC4-21300 speed. The memory is backward compatible with 2133MHz and 2400MHz bus speeds if the platform requires a lower frequency. This capacity and speed combination determines whether the module fits your server's memory plan.

Highlights

  • 32GB capacity lets you run larger workloads on compatible Lenovo ThinkSystem servers
  • ECC registered design detects and corrects data errors for reliable server operation
  • DDR4 2666MHz CL19 speed delivers responsive performance for Xeon SP Gen 1 platforms
  • 2V low-voltage operation reduces power draw in SR550 SR570 SR590 SR630 SR650 systems
  • Backward compatible with 2133MHz and 2400MHz speeds for flexible deployment

Specifications

BrandOWC
Part Number2R6D42R432GB
Capacity32GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemLenovo ThinkSystem (Xeon SP Gen 1) SR550
Lenovo ThinkSystem (Xeon SP Gen 1) SR570
Lenovo ThinkSystem (Xeon SP Gen 1) SR590
Lenovo ThinkSystem (Xeon SP Gen 1) SR630
Lenovo ThinkSystem (Xeon SP Gen 1) SR650

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Questions about this item

What DDR4 speed and JEDEC standard does this 32GB module run at?

It operates at DDR4 2666 MT/s, PC4-21300, with CL19 latency and 1.2 V, fully JEDEC compliant.

Which physical slot and form factor does this 288-pin RDIMM require?

It needs a standard 288-pin DDR4 DIMM slot in a Lenovo ThinkSystem SR550, SR570, SR590, SR630 or SR650 server; it will not fit desktop or unbuffered slots.

How is this ECC registered module installed, and what common mistake should be avoided?

Power off the server, open the chassis, align the notch on the 288-pin edge connector with the slot key, press firmly until the latches click, then verify in BIOS; do not mix it with unbuffered DIMMs.

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