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Green circuit board with gold edge contacts and black memory chips

OWC

OWC 16GB DDR4 2133MHz ECC Registered RDIMM 2Rx4 Lenovo ThinkStation P500 P700 P900

SKU CH-7WTK-3P8W6

16 GB DDR4 2133 MHz ECC registered RDIMM for Lenovo ThinkStation P500, P700 and P900 workstations

  • Total capacity16 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4
  • ECC registered design protects data integrity in workstations
  • 16GB capacity extends multitasking headroom for demanding workloads
  • DDR4 2133MHz CL15 speed matches Lenovo ThinkStation P500 P700 P900 specs
  • 2V low voltage reduces power draw and heat
  • Direct replacement for Lenovo part numbers 46W0795 46W0796 4X70F28590 4X70G78062 95Y4821

Lenovo ThinkStation ECC RDIMM upgrade

This OWC 16 GB DDR4 2133 MHz ECC registered RDIMM is built for Lenovo ThinkStation P500, P700 and P900 workstations. It delivers 16 GB of PC4-17000 CL15 memory at 1.2 V in a 288-pin 2Rx4 form factor. The module targets professionals who need error-correcting registered memory for stable server-class workloads.

Check motherboard slots and memory rules

Before ordering, confirm your ThinkStation has free 288-pin DDR4 RDIMM slots and that the system BIOS supports registered ECC modules. This memory cannot be mixed with unbuffered DIMMs, so all installed sticks must share the same registered ECC type. Verify the maximum supported capacity per slot and total system limit in the workstation documentation.

Replaces Lenovo 46W0795 46W0796 4X70F28590

This module directly replaces the listed Lenovo part numbers when expanding or refreshing memory in compatible ThinkStations. The upgrade is worthwhile when ECC registered capacity is needed for data-integrity tasks or when the workstation currently runs with unbuffered memory that the platform does not support. Buyers who need unbuffered desktop memory or higher-frequency 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 $96.99
Cheaper than about 68% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $6.06 per GB
Cheaper than about 65% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number2R1D42R416 GB
Total capacity16 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2133 (PC4 17000)
Memory
CAS latencyCL15
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsLenovo ThinkStation P500
Lenovo ThinkStation P700
Lenovo ThinkStation P900

Other versions of this model

5 more in the same range

Questions about this item

Does the 16GB DDR4 2133MHz ECC RDIMM come as a single stick or a kit, and is any extra hardware needed?

This is a single 16GB 288-pin registered DIMM; no additional hardware is required for installation.

Should I pick the 2Rx4 registered version or look for a different rank configuration for my ThinkStation P700?

The 2Rx4 registered ECC module matches the Lenovo part numbers 46W0795 and 4X70F28590 specified for the P500, P700 and P900.

What does the PC4-17000 2133MHz CL15 rating mean once the module is installed in a ThinkStation P900?

It runs at 2133 MT/s with CAS latency 15 at 1.2 V, delivering ECC error correction and registered buffering for workstation stability.

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