We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green rectangular circuit board with gold edge connectors and black memory chips, no heat spreader

OWC

OWC 8GB DDR5 5200 CL42 1Rx8 288-pin 1.1V UDIMM for HP OMEN 40L GT21

SKU CH-P43Q-GN5P5

8GB DDR5 5200 CL42 UDIMM upgrades compatible HP OMEN 40L GT21 desktops with JEDEC-standard 1.1V memory

  • Capacity8GB
  • Type288-Pin DDR5 Non-ECC UDIMM
  • SpeedDDR5 5200 (PC5 41600)
  • CAS LatencyCL42
  • Voltage1.1V
  • ECCNo

Capacity 8GB

  • 8GB DDR5 5200 MHz expands system memory for demanding tasks
  • CL42 latency and 1.1 V operation deliver efficient data access
  • Single-rank 1Rx8 design keeps signal integrity clean at speed
  • 288-pin UDIMM form factor installs directly in OMEN 40L GT21 slots
  • JEDEC and RoHS compliance ensures warranty-safe upgrade for listed models

8 GB DDR5 module for HP OMEN 40L GT21

This single 8 GB DDR5 5200 UDIMM is built specifically for the HP OMEN 40L GT21 series including the 1000m 1005m 1355st 1455se and 2000t models. It targets owners of those desktops who need a straightforward capacity increase. The module follows JEDEC standard timings and voltage for broad compatibility within the supported platforms.

Unbuffered non ECC design

The stick uses a 1Rx8 unbuffered non ECC organisation and runs at 1.1 V without a heat spreader. Its plain 288 pin DDR5 edge connector fits the standard DIMM slots on the listed OMEN motherboards. The low profile bare PCB allows installation even when CPU coolers or chassis baffles sit close to the memory sockets.

DDR5 5200 CL42 speed grade decides fit

The module operates at DDR5 5200 PC5 41600 with a CAS latency of 42. That speed grade must match the memory controller capabilities of the target OMEN 40L GT21 systems for stable operation. Buyers whose HP OMEN desktop is not one of the five listed model numbers cannot rely on this module working correctly.

Highlights

  • 8GB DDR5 5200 MHz expands system memory for demanding tasks
  • CL42 latency and 1.1 V operation deliver efficient data access
  • Single-rank 1Rx8 design keeps signal integrity clean at speed
  • 288-pin UDIMM form factor installs directly in OMEN 40L GT21 slots
  • JEDEC and RoHS compliance ensures warranty-safe upgrade for listed models

Specifications

BrandOWC
Part Number5U2D51R808GB
Capacity8GB
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

What DDR5 speed and CAS latency does the OWC 8GB module run at?

The module runs at DDR5 5200 (PC5-41600) with CL42 latency at the standard 1.1 V JEDEC voltage.

Will this 288-pin UDIMM fit inside the HP OMEN 40L GT21 chassis?

Yes — it is a standard 288-pin unbuffered non-ECC UDIMM without a heat spreader, designed for the OMEN 40L GT21-1000m, 1005m, 1355st, 1455se and 2000t.

How do I install the module and what step do people often miss?

Power off, open the case, align the notch with the slot key, press firmly until both retention clips click; the step often missed is fully seating both clips so the module cannot tilt.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.