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Green circuit board with black memory chips, no heat spreader, 288-pin DDR4 UDIMM

OWC

OWC 2U6D42R816GB 16GB DDR4 2666MHz CL19 1.2V 288-Pin Non-ECC UDIMM memory upgrade

SKU CH-P47H-YKJVT

16GB DDR4 2666MHz CL19 UDIMM for Dell OptiPlex 3080, 3090 and XE3 systems

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8
  • 16GB DDR4 2666MHz CL19 boosts multitasking speed
  • 2V low voltage reduces system power draw
  • 288-pin UDIMM fits Dell OptiPlex 3080, 3090 and XE3
  • JEDEC and RoHS compliant for warranty-safe upgrade
  • Backward compatible with 2133MHz and 2400MHz systems

16GB DDR4 Upgrade for Dell OptiPlex

This 16GB DDR4 2666MHz CL19 UDIMM is built for Dell OptiPlex 3080 SFF, 3080 Tower, 3090 SFF, 3090 Tower and XE3 systems. It delivers a straightforward capacity increase for everyday office workloads and light multitasking. The module runs at 1.2V and uses a standard 288-pin unbuffered non-ECC design.

Replaces Slower DDR4 or Fills Empty Slots

The upgrade is worth it when your OptiPlex currently runs 2133MHz or 2400MHz memory or has free DIMM slots. Moving to 2666MHz CL19 raises bandwidth for snappier application switching and larger dataset handling. Systems already at 2666MHz with full slots will not see a speed gain from this module alone.

Limited to JEDEC DDR4 2666 Unbuffered Non-ECC

The DDR4 interface tops out at the rated 2666MHz CL19 JEDEC profile; no XMP or higher-frequency profiles are supported. Non-ECC unbuffered layout means it cannot be used in servers or workstations that require registered or error-correcting modules. Maximum capacity per slot is defined by the motherboard, not by this kit.

How it compares

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

Price $87.99
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 $5.50 per GB
Cheaper than about 70% of the 20,941 comparable items (median $8.19 per GB).

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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 systemsDell OptiPlex 3080 SFF
Dell OptiPlex 3080 Tower
Dell OptiPlex 3090 SFF
Dell OptiPlex 3090 Tower
Dell OptiPlex XE3

Other versions of this model

5 more in the same range

Questions about this item

Will this 288-pin DDR4 UDIMM fit the Dell OptiPlex 3080 SFF motherboard?

Yes, the module is a standard 288-pin unbuffered DDR4 UDIMM and the compatibility list includes the OptiPlex 3080 SFF, 3080 Tower, 3090 SFF, 3090 Tower and XE3.

What is the correct way to seat the module so the retention clips lock?

Align the notch on the module with the slot key, press down firmly until both side clips snap into the notches, and verify the module sits level with no gold contacts visible.

Does this 16 GB DDR4 2666 MHz CL19 kit require any firmware update or battery replacement over time?

No firmware or battery is needed; the JEDEC-compliant DDR4 module runs at 1.2 V and is designed for the lifetime of the system.

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