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Green rectangular DDR4 memory module with gold edge connectors and black chips, no heat spreader

OWC

OWC 16GB DDR4 2666MHz CL19 1.2V 288-Pin UDIMM HP Pavilion 590-p0000nc/ns/nb/nl

SKU CH-PF2C-89D2X

16GB DDR4 2666MHz CL19 1.2V 288-pin UDIMM for HP Pavilion 590 series desktops

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8
  • 16 GB capacity lets you run more apps simultaneously
  • 2666 MHz DDR4 speed matches HP Pavilion 590 specifications
  • CL19 latency and 1.2 V voltage meet JEDEC standards
  • 288-pin unbuffered non-ECC UDIMM fits listed desktop models
  • Backward compatible with 2133 MHz and 2400 MHz systems

HP Pavilion 590 DDR4 Upgrade

This 16GB DDR4 module is built specifically for HP Pavilion 590-p0000nc, 590-p0000ns, 590-p0002nb, 590-p0003nl and 590-p0004nl desktops. It provides a direct memory upgrade for owners of those systems who need more capacity for multitasking. The 288-pin UDIMM fits the standard desktop slots used by these models.

Thermals and Power

Operating at 1.2V, the module runs at standard DDR4 voltage without a heat spreader. The unbuffered, non-ECC design draws minimal power during typical desktop workloads. Passive cooling is sufficient for normal operation inside the Pavilion chassis. JEDEC compliance ensures stable electrical characteristics.

16GB Capacity Decides Fit

The single specification that determines suitability is the 16GB capacity per module. Buyers who need a different total amount or a higher density per slot should verify their board limits before ordering. This kit does not support ECC or registered memory configurations.

How it compares

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

Price $89.99
Cheaper than about 69% 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 $5.62 per GB
Cheaper than about 69% 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 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

How do I install the 288-pin UDIMM in my HP Pavilion 590-p0000nc, and what step is often missed?

Power off and unplug the PC, open the case, align the notch on the module with the slot key, press firmly until both side clips click shut, then verify the new 16GB appears in BIOS before closing the case.

Will the OWC 16GB DDR4 2666MHz CL19 module need any maintenance or replacement later?

No routine maintenance is required; the unbuffered non-ECC UDIMM has no heat spreader or moving parts, so it runs until a rare cell failure or a future capacity upgrade prompts replacement.

What limit appears first when the 2Rx8 1.2V kit runs sustained workloads on the Pavilion 590-p0003nl?

The CL19 latency at 2666MHz sets the throughput ceiling; under continuous load the memory controller hits timing constraints before thermal or voltage limits become a factor.

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