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Green rectangular memory module with gold edge contacts and black chips on both sides

OWC

OWC 2U6D42R816GB 16GB DDR4 2666 CL19 1.2V 288-Pin UDIMM Alienware Aurora R7 R8 R9

SKU CH-MSEJ-NCXG2

A 16GB DDR4 2666MHz CL19 UDIMM module built for Alienware Aurora R7, R8 and R9 desktops

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8
  • 16GB DDR4 2666MHz CL19 boosts system responsiveness
  • 2V low-voltage design reduces power draw and heat
  • 288-pin UDIMM form factor fits Alienware Aurora R7 R8 R9
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Backward compatible with 2133MHz and 2400MHz systems

16GB DDR4 for Alienware Aurora R7 R8 R9

This 16GB DDR4 2666 CL19 UDIMM is built for Alienware Aurora R7, R8 and R9 desktops. It suits owners who want a straightforward capacity increase without changing voltage or timings. The module runs at the standard 1.2V and follows JEDEC specifications for broad compatibility. It is a direct-fit upgrade for those specific chassis.

Fits Aurora R7 R8 R9 memory slots

The 288-pin unbuffered non-ECC stick drops into the existing DIMM slots on the supported Aurora models. No heat spreader means it clears standard CPU coolers and tight internal layouts. Backward compatibility with 2133MHz and 2400MHz systems lets the module run at the highest common speed the platform allows. One module adds 16GB without occupying extra bays or cables.

Replaces slower or smaller DDR4 kits

Swapping out 8GB or lower-capacity DDR4 sticks for this 16GB module doubles per-slot capacity and can raise the memory clock from 2133MHz or 2400MHz to 2666MHz. The jump is worth it when multitasking, editing large files or running virtual machines that exceed the current memory ceiling. Builders who need ECC, registered DIMMs or speeds above 2666MHz should look elsewhere.

How it compares

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

Price $79.99
Cheaper than about 70% 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 $5.00 per GB
Cheaper than about 77% 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 systemsAlienware Aurora R7
Alienware Aurora R8
Alienware Aurora R9

Other versions of this model

5 more in the same range

Questions about this item

Does the CL19 latency limit throughput when the module runs at 2666 MHz all day?

CL19 is the rated CAS latency for 2666 MHz operation; the module meets JEDEC timings at that speed so sustained throughput follows the standard specification.

How much heat does the 1.2 V unbuffered DIMM produce during continuous use?

At 1.2 V the DDR4 UDIMM runs at standard JEDEC voltage without a heat spreader, so thermal output stays within normal desktop memory limits for all-day workloads.

Which Alienware Aurora chassis must I already own for this 288-pin kit to fit?

The 288-pin DDR4 UDIMM is validated for Alienware Aurora R7, R8 and R9; one of those systems is required for guaranteed compatibility.

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