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

OWC

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

SKU CH-GZHZ-A5Q1H

Adds 8 GB of DDR4-2666 CL19 memory to compatible HP Pavilion 590 desktops

  • Capacity8GB
  • Type288-Pin DDR4 Non-ECC UDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCNo
  • 8GB capacity expands multitasking headroom for demanding workloads
  • DDR4 2666MHz CL19 timing accelerates data throughput
  • 2V operation reduces power draw and heat
  • 288-pin UDIMM fits HP Pavilion 590 series desktops
  • JEDEC and RoHS compliance ensures warranty-safe upgrade

What this memory fits

This OWC 8GB DDR4 module is built specifically for HP Pavilion 590 desktops including the p0099nb, p0099nl, p0305ns, p0556ng and p0557ng models. It targets owners of those systems who want a straightforward capacity increase without compatibility guesswork.

The spec that decides fit

The decisive detail is the 288-pin DDR4 2666MHz PC4-21300 CL19 1.2V unbuffered non-ECC UDIMM form factor; only systems accepting that exact combination will recognise the stick. Buyers whose machines require ECC, registered DIMMs or a different voltage cannot use this module.

Installation and common issues

Installation is a standard DIMM slot insert that most users complete in minutes, though the lack of a heat spreader means airflow matters in tight chassis. The usual problem is mixing this 2666MHz stick with slower 2133MHz or 2400MHz modules, which forces the whole array to run at the lowest common speed.

Puntos fuertes

  • 8GB capacity expands multitasking headroom for demanding workloads
  • DDR4 2666MHz CL19 timing accelerates data throughput
  • 2V operation reduces power draw and heat
  • 288-pin UDIMM fits HP Pavilion 590 series desktops
  • JEDEC and RoHS compliance ensures warranty-safe upgrade

Especificaciones

BrandOWC
Part Number2U6D41R808GB
Capacity8GB
Type288-Pin DDR4 Non-ECC UDIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCNo
Buffered/RegisteredUnbuffered
Rank1Rx8
Heat SpreaderNo
Compatible SystemHP Pavilion 590-p0099nb
HP Pavilion 590-p0099nl
HP Pavilion 590-p0305ns
HP Pavilion 590-p0556ng
HP Pavilion 590-p0557ng

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Preguntas sobre este artículo

What does the 2666MHz speed mean once this module is installed in my HP Pavilion 590?

The module will run at 2666MHz if the system supports it; otherwise it will downclock to 2400MHz or 2133MHz automatically.

What does the PC4-21300 rating cap in practice?

PC4-21300 is the JEDEC standard name for DDR4 2666MHz; the memory controller in your Pavilion 590 determines the actual throughput ceiling.

Will this 288-pin UDIMM fit the memory slots on the listed Pavilion 590 models?

Yes, the 288-pin unbuffered DIMM form factor matches the DDR4 slots on the 590-p0099nb, 590-p0099nl, 590-p0305ns, 590-p0556ng and 590-p0557ng.

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