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Green rectangular DDR4 memory module with black chips and gold edge connectors

OWC

OWC 2R9D42R432GB 32GB DDR4 2933MHz ECC RDIMM memory upgrade

SKU CH-HTCP-6816C

32 GB DDR4 2933 MHz ECC registered DIMM for Lenovo ThinkStation P520 and P520c workstations

  • Total capacity32 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 32GB

  • 32GB capacity expands workstation memory for larger workloads
  • DDR4 2933MHz speed with CL21 latency delivers responsive data throughput
  • ECC registered design detects and corrects single-bit errors automatically
  • 2V operation reduces power draw and thermal load
  • Validated for Lenovo ThinkStation P520 and P520c systems

Purpose-built upgrade

This 32GB DDR4 2933MHz ECC RDIMM is designed specifically for Lenovo ThinkStation P520 and P520c workstations. It replaces Lenovo part numbers 01AG632, 4ZC7A08709 and 4ZC7A08742 with a 288-pin registered module running at 1.2V.

Sustained reliability

ECC registered architecture detects and corrects single-bit errors during continuous operation, keeping data integrity intact across long rendering or compute sessions. The module runs at CL21 latency and maintains stability when systems are loaded for extended periods rather than short bursts.

Compatibility checklist

Verify your workstation requires registered ECC RDIMMs and not unbuffered memory, as the two types cannot be mixed. Confirm the platform supports DDR4 2933MHz or the backward-compatible speeds of 2133MHz, 2400MHz and 2666MHz. Buyers needing standard desktop memory or non-ECC modules should look elsewhere.

How it compares

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

Price $205.99
Cheaper than about 58% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $6.44 per GB
Cheaper than about 61% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number2R9D42R432 GB
Total capacity32 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Memory
CAS latencyCL21
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsLenovo ThinkStation P520
Lenovo ThinkStation P520c

Other versions of this model

5 more in the same range

Questions about this item

How much power does the 1.2V 32GB DDR4 2933MHz ECC RDIMM draw when the workstation runs all day?

The module operates at 1.2V, the standard DDR4 voltage, so power draw stays low even under continuous load in a ThinkStation P520 or P520c.

What must the system already have for this 288-pin registered ECC DIMM to function?

A Lenovo ThinkStation P520 or P520c with a free 288-pin DDR4 slot that supports registered ECC memory; it will not work in standard desktops or alongside unbuffered modules.

Will this PC4-23400 CL21 kit run stably alongside existing 2133MHz, 2400MHz or 2666MHz DDR4 ECC RDIMMs?

Yes, the specifications list backward compatibility with 2133MHz, 2400MHz and 2666MHz speeds, so the 2933MHz module will down-clock to match the slowest installed DIMM.

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