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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

  • Capacity16GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes
  • 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.

Highlights

  • 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

Specifications

BrandOWC
Part Number2R6D42R816GB
Capacity16GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx8
Heat SpreaderNo
Compatible SystemLenovo ThinkAgile (Xeon SP Gen 1) HX1320
Lenovo ThinkAgile (Xeon SP Gen 1) HX1321
Lenovo ThinkAgile (Xeon SP Gen 1) HX2320
Lenovo ThinkAgile (Xeon SP Gen 1) HX3320
Lenovo ThinkAgile (Xeon SP Gen 1) HX3520-G

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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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