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Green bare circuit board DDR5 memory module with black chips and gold edge connector

OWC

OWC 16GB DDR5 5200 CL42 1Rx8 288-pin 1.1V UDIMM memory upgrade

SKU CH-KTC5-WJXGT

16 GB DDR5-5200 CL42 UDIMM adds capacity to compatible HP OMEN 40L desktops

  • Capacity16GB
  • Type288-Pin DDR5 Non-ECC UDIMM
  • SpeedDDR5 5200 (PC5 41600)
  • CAS LatencyCL42
  • Voltage1.1V
  • ECCNo

Capacity 16GB

  • Boost system responsiveness with 16 GB DDR5 5200 CL42 memory
  • JEDEC and RoHS compliant for a warranty-safe upgrade
  • Low 1.1 V operation reduces power draw and heat
  • Single 1Rx8 rank simplifies installation in compatible HP OMEN 40L desktops
  • 288-pin unbuffered UDIMM fits standard DDR5 desktop slots

System-specific DDR5 upgrade

This OWC 16GB DDR5 5200 CL42 UDIMM is built for HP OMEN 40L desktops including the GT21-1000m GT21-1005m GT21-1355st GT21-1455se and GT21-2000t. It runs at 1.1V with a single 1Rx8 rank and no heat spreader. The module meets JEDEC and ROHS standards for a warranty-safe installation.

Ideal for OMEN 40L owners only

The part fits the five listed OMEN 40L configurations and other systems that accept 288-pin DDR5 5200 unbuffered non-ECC memory. Builders with different motherboards laptops or workstations requiring ECC registered or lower-voltage modules should look elsewhere.

Straightforward DIY installation

Insert the DIMM into an empty slot until the retention clips click. No heat spreader means clearance is rarely an issue. The most common mistake is mixing this 5200 CL42 stick with slower or faster kits which can force the system to run at the lowest common speed.

Highlights

  • Boost system responsiveness with 16 GB DDR5 5200 CL42 memory
  • JEDEC and RoHS compliant for a warranty-safe upgrade
  • Low 1.1 V operation reduces power draw and heat
  • Single 1Rx8 rank simplifies installation in compatible HP OMEN 40L desktops
  • 288-pin unbuffered UDIMM fits standard DDR5 desktop slots

Specifications

BrandOWC
Part Number5U2D51R816GB
Capacity16GB
Type288-Pin DDR5 Non-ECC UDIMM
SpeedDDR5 5200 (PC5 41600)
CAS LatencyCL42
Voltage1.1V
ECCNo
Buffered/RegisteredUnbuffered
Rank1Rx8
Heat SpreaderNo
Compatible SystemHP OMEN 40L GT21-1000m
HP OMEN 40L GT21-1005m
HP OMEN 40L GT21-1355st
HP OMEN 40L GT21-1455se
HP OMEN 40L GT21-2000t

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Does my HP OMEN 40L GT21 motherboard need a free 288-pin DDR5 slot for this 16GB module?

Yes, the module is a 288-pin DDR5 UDIMM and requires an available DDR5 DIMM slot on the HP OMEN 40L GT21 motherboard to operate.

Will this 5200MHz CL42 DDR5 module run at its rated speed alongside slower DDR5 memory already installed?

The system will run all installed DDR5 memory at the speed of the slowest module, so this 5200MHz CL42 stick will downclock to match any slower DDR5 already present.

How can I confirm the 16GB DDR5 5200 CL42 module is detected correctly after installation?

Check the BIOS or Windows Task Manager to verify the total memory shows the added 16GB and that the speed reads 5200MHz with CL42 timings.

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