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Green printed circuit board with black memory chips and gold edge contacts

OWC

OWC 16GB DDR4 2666MHz CL19 1.2V 288-Pin UDIMM HP ProDesk 400 G6 600 G5 memory upgrade

SKU CH-TGWK-SGSCS

A 16 GB DDR4 2666 MHz CL19 UDIMM for HP ProDesk 400 G6 and 600 G5 desktops

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8
  • Boosts multitasking with 16GB DDR4 capacity
  • Speeds up workloads at 2666MHz CL19 timing
  • Low 1.2V draw cuts power consumption
  • Fits HP ProDesk 400 G6 and 600 G5 models
  • JEDEC compliant for reliable drop-in upgrades

16GB DDR4 upgrade for HP ProDesk

This 16GB DDR4 module runs at 2666MHz with CL19 latency and 1.2V operation. It fits HP ProDesk 400 G6 and 600 G5 SFF and Tower systems using 288-pin UDIMM slots. The unbuffered non-ECC design matches OEM specifications for these desktops.

Replaces slower or smaller DDR4 DIMMs

It steps up from 2133MHz or 2400MHz modules thanks to backward compatibility at those speeds. The jump is worth it when your ProDesk currently has less than 16GB per slot or runs at lower JEDEC frequencies. Each stick is tested to meet JEDEC standards for a warranty-safe upgrade.

Suits owners of listed HP ProDesk models

Builders needing ECC registered memory or a different form factor should look elsewhere. Systems outside the 400 G6 and 600 G5 families are not covered by the validated compatibility list. Buyers wanting higher frequencies than 2666MHz will need a different module.

How it compares

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

Price $79.99
Cheaper than about 70% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $5.00 per GB
Cheaper than about 77% 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 number2U6D42R816 GB
Total capacity16 GB
Product type288-Pin DDR4 Non-ECC UDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsHP ProDesk 400 G6 SFF
HP ProDesk 400 G6 Tower
HP ProDesk 600 G5 SFF
HP ProDesk 600 G5 Tower

Other versions of this model

5 more in the same range

Questions about this item

Does the 288-pin DDR4 UDIMM fit the HP ProDesk 400 G6 SFF and Tower plus 600 G5 SFF and Tower?

Yes, the module is validated for HP ProDesk 400 G6 SFF, 400 G6 Tower, 600 G5 SFF and 600 G5 Tower.

What is the common mistake when installing this 16GB DDR4 2666MHz CL19 stick?

Not pressing the module straight down until both retention clips snap shut, leaving it partially seated and causing boot failure.

Will this 1.2V non-ECC memory need replacement or maintenance later?

No scheduled maintenance is required; the module is rated for the system lifetime and carries a limited lifetime warranty.

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