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Green circuit board with black memory chips, gold edge connector, no heat spreader

OWC

OWC 16GB DDR4 2666MHz CL19 1.2V 288-Pin UDIMM for Dell G5 5090

SKU CH-K2E1-WQC6S

16GB DDR4 2666MHz CL19 1.2V UDIMM tested for Dell G5 5090 compatibility

  • Capacity16GB
  • Type288-Pin DDR4 Non-ECC UDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCNo
  • 16 GB DDR4 2666 MHz CL19 boosts Dell G5 5090 responsiveness
  • 2 V low-voltage operation reduces system power draw
  • 288-pin UDIMM form factor fits desktop DIMM slots directly
  • Backward compatible with 2133 MHz and 2400 MHz memory speeds
  • JEDEC compliant and RoHS certified for reliable warranty-safe upgrade

OWC 16GB DDR4 2666MHz UDIMM for Dell G5 5090

This 16GB DDR4 module runs at 2666MHz with CL19 latency and 1.2V operation. It is built as a 288-pin non-ECC unbuffered UDIMM using a 2Rx8 rank configuration. The part is validated specifically for the Dell G5 5090 desktop and meets JEDEC standard specifications for reliable compatibility.

Standard voltage and unbuffered design for quiet

Operating at the standard 1.2V DDR4 voltage, this module draws minimal power and generates little heat during typical workloads. The absence of a heat spreader reflects the low thermal output of standard JEDEC speeds. It installs directly into the motherboard without active cooling requirements, keeping the system quiet.

Backward compatible with 2133MHz and 2400MHz systems

If the platform runs memory at 2133MHz or 2400MHz, the module will downclock automatically to match the controller. Sustained multitasking and large file handling benefit from the 16GB capacity without throttling. The 2Rx8 organisation supports stable throughput during extended work sessions. Not suited for builds requiring ECC error correction or registered DIMM slots.

Pluspunten

  • 16 GB DDR4 2666 MHz CL19 boosts Dell G5 5090 responsiveness
  • 2 V low-voltage operation reduces system power draw
  • 288-pin UDIMM form factor fits desktop DIMM slots directly
  • Backward compatible with 2133 MHz and 2400 MHz memory speeds
  • JEDEC compliant and RoHS certified for reliable warranty-safe upgrade

Specificaties

BrandOWC
Part Number2U6D42R816GB
Capacity16GB
Type288-Pin DDR4 Non-ECC UDIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCNo
Buffered/RegisteredUnbuffered
Rank2Rx8
Heat SpreaderNo
Compatible SystemDell G5 5090

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How do I install the 288-pin UDIMM in my Dell G5 5090, and what step do people often miss?

Power off the PC, unplug it, open the case, align the notch on the 288-pin DDR4 module with the slot key, press firmly until both retention clips click, then verify 16GB appears in BIOS before closing the case.

What maintenance or replacement will this 16GB DDR4 2666MHz CL19 module need later?

No scheduled maintenance is required; the unbuffered non-ECC UDIMM has no heat spreader or moving parts, so replacement is only needed if a memory error appears or capacity must be increased.

What limit appears first when this CL19 1.2V kit runs sustained workloads?

The CAS latency of CL19 at 2666MHz sets the timing ceiling, and the fixed 1.2V JEDEC voltage prevents higher frequencies, so throughput caps at the rated PC4-21300 bandwidth.

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