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Two green circuit boards with gold edge connectors and black memory chips

OWC

OWC 5U2D51R8016P 16GB (2x8GB) DDR5 5200 CL42 1.1V UDIMM Kit for HP OMEN 40L GT21

SKU CH-WTK6-KVS4K

16 GB DDR5 5200 CL42 dual-channel kit built for HP OMEN 40L GT21 desktops

  • Total capacity16 GB (2 × 8 GB)
  • Rated speedDDR5 5200 (PC5 41600)
  • CAS latencyCL42
  • Rated voltage1.1 V
  • Buffer typeUnbuffered
  • Memory rank1Rx8

Capacity 16GB (2 x 8GB)

  • 16 GB kit boosts multitasking with two 8 GB modules
  • DDR5 5200 speed and CL42 latency lift system responsiveness
  • 1 V operation keeps power draw low for desktop stability
  • 288-pin unbuffered non-ECC design fits HP OMEN 40L GT21 slots
  • JEDEC and RoHS compliant for warranty-safe upgrade

HP OMEN 40L GT21 DDR5 Kit

This 16GB kit contains two 8GB DDR5 5200 CL42 UDIMM modules built for HP OMEN 40L GT21 desktops. It runs at 1.1V with 1Rx8 unbuffered organisation and no heat spreader. The JEDEC-standard PC5-41600 spec ensures a warranty-safe upgrade path.

Owners of listed OMEN 40L models

Suits owners of the GT21-1000m, GT21-1005m, GT21-1355st, GT21-1455se and GT21-2000t who need 16GB of DDR5 memory. Not for systems that require ECC or registered DIMMs, nor for builds that need capacities beyond 16GB or speeds above 5200 MT/s.

DDR5 5200 CL42 1.1V UDIMM spec

The decisive specification is DDR5 5200 CL42 at 1.1V in 288-pin unbuffered UDIMM form factor. Only motherboards wired for this exact JEDEC profile will train the kit at rated speed without manual tuning.

How it compares

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

Price $328.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 16 GB (2 × 8 GB)
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $20.56 per GB
Pricier than about 66% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameOWC
Part number5U2D51R8016P
Total capacity16 GB (2 × 8 GB)
Product type288-Pin DDR5 Non-ECC UDIMM
Performance
Rated speedDDR5 5200 (PC5 41600)
Memory
CAS latencyCL42
ECC supportNo
Buffer typeUnbuffered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsHP 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

Questions about this item

When will the 16 GB DDR5 5200 CL42 kit need replacement?

DDR5 modules have no scheduled replacement interval; they remain in service until a hardware failure occurs or a capacity upgrade is desired.

What limit appears first when the 288-pin UDIMMs run continuously in the HP OMEN 40L GT21?

The memory controller enforces the JEDEC DDR5 5200 speed and CL42 latency, so sustained throughput caps at the rated 5200 MT/s data rate.

How much heat and power does the 1.1 V DDR5 5200 kit produce when the HP OMEN 40L runs all day?

Each module operates at the standard 1.1 V DDR5 voltage without a heat spreader, so thermal output stays within normal JEDEC limits for unbuffered UDIMMs.

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