We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green bare circuit board DDR4 RDIMM with black chips and gold contacts

OWC

OWC 32GB DDR4 3200MHz CL22 1.2V 288pin ECC Registered RDIMM Memory Upgrade

SKU CH-KV60-61DZC

32 GB DDR4 3200 MHz ECC registered RDIMM for Lenovo ThinkSystem SR635, SR655, SR850 and SR860 servers

  • Capacity32GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 3200 (PC4 25600)
  • CAS LatencyCL22
  • Voltage1.2V
  • ECCYes

Capacity 32GB

  • 32 GB capacity expands server memory for demanding workloads
  • DDR4 3200 MHz speed delivers high data throughput for Lenovo ThinkSystem servers
  • CL22 latency and 1.2 V voltage balance responsive performance with efficient power use
  • ECC registered design detects and corrects errors to protect data integrity in critical applications
  • Validated for ThinkSystem SR635, SR655, SR850 and SR860 ensuring reliable compatibility

32GB DDR4 ECC RDIMM for Lenovo ThinkSystem

This 32GB DDR4 3200MHz CL22 registered DIMM is built for Lenovo ThinkSystem SR635, SR655, SR850 and SR860 servers. It delivers error-correcting, buffered memory for workloads that demand data integrity and sustained uptime.

Replaces Lenovo 4ZC7A15122 in Xeon SP Gen 2 servers

The module matches the original Lenovo part number 4ZC7A15122, so it fits directly into the listed ThinkSystem platforms. The upgrade is worth it when your current configuration hits memory limits or when you are populating empty slots to increase total capacity.

Verify registered ECC support and slot availability

Confirm your system requires registered ECC RDIMMs and cannot accept unbuffered memory, as mixing types is not supported. Check that the motherboard has free 288-pin DDR4 slots and that all installed DIMMs share the same capacity, speed and rank configuration for optimal operation.

Highlights

  • 32 GB capacity expands server memory for demanding workloads
  • DDR4 3200 MHz speed delivers high data throughput for Lenovo ThinkSystem servers
  • CL22 latency and 1.2 V voltage balance responsive performance with efficient power use
  • ECC registered design detects and corrects errors to protect data integrity in critical applications
  • Validated for ThinkSystem SR635, SR655, SR850 and SR860 ensuring reliable compatibility

Specifications

BrandOWC
Part Number3R2D42R432GB
Capacity32GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 3200 (PC4 25600)
CAS LatencyCL22
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemLenovo ThinkSystem SR635
Lenovo ThinkSystem SR655
Lenovo ThinkSystem SR850 (Xeon SP Gen 2)
Lenovo ThinkSystem SR860 (Xeon SP Gen 2)

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Will the 288-pin DDR4 RDIMM fit the DIMM slots in a Lenovo ThinkSystem SR635?

Yes, the 288-pin DDR4 3200 RDIMM matches the slot keying used in the ThinkSystem SR635, SR655, SR850 (Xeon SP Gen 2) and SR860 (Xeon SP Gen 2) servers listed for this module.

What is the correct way to seat this registered ECC module so the server recognises all 32 GB?

Align the notch on the 288-pin edge connector with the slot key, press straight down until both retention clips click shut, then verify in BIOS that the module shows as registered ECC at 3200 MT/s.

When should this 32 GB DDR4 3200 CL22 RDIMM be replaced in a production server?

Replace the module if memory diagnostics report uncorrectable ECC errors, if the system logs repeated corrected-error thresholds, or during a planned capacity upgrade to larger RDIMMs.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.