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Green rectangular DDR4 memory module with gold edge connectors and black chips, no heat spreader

OWC

OWC 32GB DDR4 2933MHz ECC Registered RDIMM memory upgrade

SKU CH-FEC2-8M3PT

Adds 32 GB of DDR4 2933 MHz ECC registered memory to compatible Lenovo ThinkAgile servers

  • Capacity32GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS LatencyCL21
  • Voltage1.2V
  • ECCYes

Capacity 32GB

  • 32 GB capacity expands server memory for larger workloads
  • ECC registered design detects and corrects data errors for reliability
  • 2933 MHz DDR4 speed with CL21 latency delivers responsive performance
  • 2 V operation reduces power draw and heat in dense configurations
  • Validated for Lenovo ThinkAgile HX3520-G, HX3521-G, HX5520, HX5521, HX7520 servers

Targeted server upgrade

This 32GB DDR4 2933MHz ECC Registered RDIMM is built for Lenovo ThinkAgile HX3520-G, HX3521-G, HX5520, HX5521 and HX7520 systems running Xeon SP Gen 2 processors. The module delivers 32GB capacity at PC4-23400 speed with CL21 latency and 1.2V operation. It replaces Lenovo part numbers 01AG632, 4ZC7A08709 and 4ZC7A08742 for direct compatibility.

Thermals and power draw

Registered ECC modules run at standard 1.2V DDR4 voltage without a heat spreader, relying on server chassis airflow for cooling. Power consumption scales with the 2Rx4 rank configuration and 2933MHz data rate under typical workloads. Acoustic output is determined by the host system fans rather than the memory itself.

Upgrade path and limits

This module upgrades from 2133MHz, 2400MHz or 2666MHz DDR4 Registered ECC memory in the listed ThinkAgile platforms. It cannot be mixed with unbuffered DIMMs and will not work in standard desktop computers or consumer motherboards. Buyers needing higher per-slot density or different form factors must look elsewhere.

Highlights

  • 32 GB capacity expands server memory for larger workloads
  • ECC registered design detects and corrects data errors for reliability
  • 2933 MHz DDR4 speed with CL21 latency delivers responsive performance
  • 2 V operation reduces power draw and heat in dense configurations
  • Validated for Lenovo ThinkAgile HX3520-G, HX3521-G, HX5520, HX5521, HX7520 servers

Specifications

BrandOWC
Part Number2R9D42R432GB
Capacity32GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2933 (PC4 23400)
CAS LatencyCL21
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemLenovo ThinkAgile (Xeon SP Gen 2) HX3520-G
Lenovo ThinkAgile (Xeon SP Gen 2) HX3521-G
Lenovo ThinkAgile (Xeon SP Gen 2) HX5520
Lenovo ThinkAgile (Xeon SP Gen 2) HX5521
Lenovo ThinkAgile (Xeon SP Gen 2) HX7520

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

How do I install the 288-pin DDR4 RDIMM in a ThinkAgile HX5520 and what step is often missed?

Power down the server, open the chassis, align the module key with the slot notch, press firmly until both ejector clips click, then verify in BIOS that ECC registered mode is active — the step often missed is confirming the registered setting after boot.

What maintenance or replacement will the 32GB 2Rx4 module need over its service life?

No routine maintenance is required; the module has no heat spreader or moving parts. Replace only if memory diagnostics report correctable ECC errors rising above threshold or a DIMM fails POST.

What limit appears first when the CL21 2933MHz RDIMM runs sustained workloads in a HX7520?

The CAS latency of CL21 at 2933MHz sets the timing ceiling; under sustained load the memory controller will throttle to 2666MHz or 2400MHz before thermal limits are reached.

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