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Green circuit board with black memory chips and gold edge connector

OWC

OWC 2U6D41R808GB 8GB DDR4 2666MHz CL19 1.2V 288-Pin UDIMM for HP Pavilion 590

SKU CH-0HDP-51Y6K

8GB DDR4 2666MHz CL19 UDIMM upgrades HP Pavilion 590 desktops with JEDEC-standard memory

  • Total capacity8 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank1Rx8
  • Designed for HP Pavilion 590 series desktops
  • 8GB DDR4 2666MHz CL19 for responsive multitasking
  • 2V low-voltage operation reduces power draw
  • 288-pin unbuffered UDIMM fits standard desktop slots
  • JEDEC and RoHS compliant for warranty-safe upgrades

8GB DDR4 2666MHz UDIMM for HP Pavilion 590

This OWC 8GB DDR4 2666MHz CL19 1.2V 288-pin Non-ECC UDIMM is built for HP Pavilion 590-p0000nc, 590-p0000ns, 590-p0002nb, 590-p0003nl and 590-p0004nl desktops. It meets JEDEC PC4-21300 specifications for a warranty-safe memory upgrade. The module is unbuffered and single-rank 1Rx8 without a heat spreader.

Who this suits and who should look elsewhere

Buyers wanting a direct-fit 8GB DDR4 module for the listed HP Pavilion 590 systems will find this part validated for those models. Systems requiring ECC registered memory or a different DDR generation cannot use this UDIMM. Builders needing capacities beyond 8GB per slot or speeds above 2666MHz must select a different specification.

The deciding specification: DDR4 2666 CL19 1.2V

The module runs at DDR4 2666 (PC4-21300) with CL19 latency at 1.2V in a 288-pin unbuffered DIMM form factor. It is backward compatible with 2133MHz and 2400MHz bus speeds. This speed, voltage and pin layout determine whether the memory will be accepted by the target HP Pavilion 590 motherboard.

How it compares

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

Price $45.99
Cheaper than about 79% of the 21,161 comparable items (median $397.99).
Total capacity 8 GB
Lower than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $5.75 per GB
Cheaper than about 68% 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 number2U6D41R808 GB
Total capacity8 GB
Product type288-Pin DDR4 Non-ECC UDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportNo
Buffer typeUnbuffered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsHP Pavilion 590-p0000nc
HP Pavilion 590-p0000ns
HP Pavilion 590-p0002nb
HP Pavilion 590-p0003nl
HP Pavilion 590-p0004nl

Other versions of this model

5 more in the same range

Questions about this item

Does my HP Pavilion 590 motherboard need a 288-pin DDR4 slot to accept this 8GB module?

Yes — the stick is a 288-pin DDR4 UDIMM, so the board must provide a matching DDR4 DIMM socket.

Will this 2666MHz CL19 stick down-clock reliably if I keep my existing 2400MHz or 2133MHz modules installed?

The module is backward compatible with 2400MHz and 2133MHz speeds, so it will run at the lowest common frequency when mixed.

How can I confirm the new RAM is running at 2666MHz with CL19 timings after installation?

Open Task Manager’s Performance tab or run CPU-Z; both will show the active speed and CAS latency for each installed DIMM.

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