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Green 288-pin DDR4 ECC registered RDIMM module, no heat spreader

OWC

OWC 2R9D48R4128G 128GB DDR4 2933 ECC Registered RDIMM memory upgrade

SKU CH-JP1F-F6XP7

128 GB DDR4 2933 ECC registered RDIMM for Lenovo ThinkAgile Xeon SP Gen 2 servers

  • Total capacity128 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latency21
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank8Rx4
  • 128GB single module expands server capacity
  • DDR4 2933 speed matches Xeon SP Gen 2 platforms
  • ECC registered design protects data integrity
  • 2V operation reduces power draw
  • Backward compatible with 2133, 2400, 2666MHz systems

Targeted server upgrade

This 128GB DDR4 2933 ECC Registered RDIMM is built for Lenovo ThinkAgile HX3321, HX3520-G, HX3521-G, HX5520 and HX5521 systems. It serves administrators who need maximum single-module capacity in those Xeon SP Gen 2 platforms without mixing memory types.

Registered ECC construction

The 288-pin module operates at 1.2V with CL21 latency and an 8Rx4 rank structure. Because it is registered ECC, it cannot be used in standard desktops or mixed with unbuffered or load-reduced DIMMs, ensuring signal integrity in multi-DIMM server configurations.

Replaces lower-capacity RDIMMs

Installing this module upgrades from smaller registered DIMMs when the workload demands more memory per slot. The jump is worthwhile when the ThinkAgile node hits capacity limits and the platform’s qualified-vendor list confirms this part number.

How it compares

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

Price $708.99
Pricier than about 56% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB
Higher than about 70% of the 20,941 comparable items (median 32 GB).
CAS latency 21
Lower than about 63% of the 483 comparable items (median 22).
Price per GB $5.54 per GB
Cheaper than about 70% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number2R9D48R4128G
Total capacity128 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Memory
CAS latency21
ECC supportYes
Buffer typeRegistered
Memory rank8Rx4
Heat spreaderNo
Power
Rated voltage1.2 V

Questions about this item

Does the DDR4 2933 PC4-23400 interface run at 2933 MT/s or drop to a lower speed?

The module is rated for 2933 MT/s PC4-23400 and is backward compatible with 2133, 2400 and 2666 MT/s speeds.

Will the 288-pin ECC Registered RDIMM fit my Lenovo ThinkAgile HX3520-G chassis?

This 288-pin DDR4 RDIMM is validated for Lenovo ThinkAgile Xeon SP Gen 2 models including HX3321, HX3520-G, HX3521-G, HX5520 and HX5521.

What is the correct way to install this 8Rx4 registered DIMM and what step is often missed?

Power down the server, open the chassis, align the notch on the 288-pin module with the slot key, press firmly until both retention clips click, then verify the memory appears in BIOS.

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