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Green rectangular DDR4 288-pin ECC registered DIMM module with black memory chips and gold contacts

OWC

OWC 16GB DDR4 2666 ECC RDIMM ThinkAgile HX1320 HX1321 HX2320 HX3320 HX3520-G

SKU CH-6397-92KGV

16 GB DDR4-2666 ECC registered DIMM for Lenovo ThinkAgile Xeon SP Gen 1 servers

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx8
  • 16 GB DDR4-2666 ECC RDIMM expands server memory capacity
  • CL19 latency at 1.2 V delivers stable registered performance
  • 2Rx8 288-pin module fits ThinkAgile HX1320 HX1321 HX2320 HX3320 HX3520-G
  • Backward compatible with 2133 and 2400 MHz systems
  • Replaces Lenovo part numbers 01AG618 4X70P98202 7X77A01303

OWC 16GB DDR4 ECC RDIMM

This OWC module delivers 16GB of DDR4 2666 ECC registered memory built for Lenovo ThinkAgile servers. It runs at 1.2V with CL19 latency and uses a 288-pin 2Rx8 layout. The part replaces Lenovo numbers 01AG618, 4X70P98202 and 7X77A01303. It is validated for HX1320, HX1321, HX2320, HX3320 and HX3520-G systems.

Who this suits

Administrators expanding Xeon SP Gen 1 ThinkAgile clusters will find a direct fit. Buyers who need unbuffered desktop RAM, non-ECC modules or capacities beyond 16GB per slot should look elsewhere. This memory cannot mix with unbuffered DIMMs and will not work in consumer motherboards.

Installation notes

The 288-pin RDIMM seats in standard DDR4 server slots; alignment notches prevent reversed insertion. Common issues include mixing registered and unbuffered sticks, populating slots in the wrong order for the platform or skipping a firmware update that enables full 2666 speed.

How it compares

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

Price $106.99
Cheaper than about 67% 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 $6.69 per GB
Cheaper than about 59% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number2R6D42R816 GB
Total capacity16 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportYes
Buffer typeRegistered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V

Other versions of this model

5 more in the same range

Questions about this item

Do I need a Lenovo ThinkAgile server with Xeon SP Gen 1 processors for this 288-pin DDR4 2666 ECC RDIMM to work?

Yes, this module is validated for Lenovo ThinkAgile HX1320, HX1321, HX2320, HX3320 and HX3520-G systems built on Xeon SP Gen 1 platforms.

Can I keep my existing 2133MHz or 2400MHz DDR4 ECC registered modules and add this 2666MHz CL19 stick?

The module is backward compatible with 2133MHz and 2400MHz speeds, but it cannot be mixed with unbuffered memory; all populated slots must use registered ECC DIMMs.

How do I confirm the 16GB 2Rx8 module is recognised at 2666MHz with ECC active after installation?

Check the system BIOS or UEFI memory information screen — it should show 16GB, 2666 MT/s, CL19, 1.2V and ECC registered status for the new DIMM.

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