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Green circuit board with gold contacts and black memory chips

OWC

OWC 128GB DDR4 2666 PC4-21300 CL19 8Rx4 288-pin 1.2V ECC Registered RDIMM Memory Upgrade

SKU CH-KB6H-0GJKC

128 GB DDR4-2666 ECC registered RDIMM for Lenovo ThinkAgile Xeon SP Gen 1 servers

  • Capacity128GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS Latency19
  • Voltage1.2V
  • ECCYes
  • 128GB capacity expands server memory headroom
  • DDR4 2666 speed matches ThinkAgile HX platform specs
  • ECC registered design protects data integrity in critical workloads
  • Single 8Rx4 module simplifies high-density upgrades
  • 2V operation reduces power draw per DIMM

Server-grade ECC registered DIMM

This OWC module delivers 128GB of DDR4 ECC registered memory rated at 2666 MT/s with CL19 latency and 1.2V operation. It is built for Lenovo ThinkAgile HX1320, HX1321, HX2320, HX2321 and HX3320 systems running Xeon SP Gen 1 processors. The single 288-pin RDIMM uses an 8Rx4 organisation to provide high-density capacity for virtualisation and database workloads.

JEDEC DDR4-2666 interface limits

The PC4-21300 standard caps transfer rates at 2666 MT/s, so this module will not exceed that ceiling even if the platform supports faster speeds. Backward compatibility with 2133 and 2400 MT/s buses is built in, allowing the DIMM to clock down automatically when installed in slower channels. Registered buffering adds a cycle of latency versus unbuffered DIMMs, a trade-off required for signal integrity at high module counts.

288-pin registered form factor implications

The 288-pin RDIMM keying prevents insertion into desktop UDIMM slots, so it cannot be used in standard consumer motherboards. No heat spreader is fitted, relying on chassis airflow for cooling in dense server configurations. Mixing this registered ECC module with unbuffered or load-reduced ECC DIMMs is not supported and will prevent the system from posting.

商品特色

  • 128GB capacity expands server memory headroom
  • DDR4 2666 speed matches ThinkAgile HX platform specs
  • ECC registered design protects data integrity in critical workloads
  • Single 8Rx4 module simplifies high-density upgrades
  • 2V operation reduces power draw per DIMM

商品規格

BrandOWC
Part Number2R6D48R4128G
Capacity128GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2666 (PC4 21300)
CAS Latency19
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank8Rx4
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) HX2321
Lenovo ThinkAgile (Xeon SP Gen 1) HX3320

商品問答

Is the 128GB 8Rx4 module the only capacity and rank available for these ThinkAgile servers?

This listing supplies a single 128GB DDR4 2666 CL19 8Rx4 registered ECC DIMM; other capacities or ranks are not included in this product.

Will the PC4-21300 2666MHz rating run at full speed in a ThinkAgile HX1320 or HX3320?

The module operates at DDR4 2666 (PC4-21300) with CL19 latency and 1.2V voltage, matching the server's supported memory speed.

Does the 288-pin registered ECC interface limit mixing with unbuffered or load-reduced DIMMs?

Yes — this is a registered ECC RDIMM and cannot be mixed with unbuffered or ECC load-reduced memory in the same system.

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