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Two green DDR4 DIMM sticks, 288-pin, no heat spreader

Computer Memory Solutions

Computer Memory Solutions CM2048642666DIMM 32GB (2x16GB) DDR4 2666MHz CL19 DIMM

SKU CH-AT45-PG34Q

32GB DDR4 kit (2×16GB) at 2666MHz CL19, 1.20V unbuffered DIMMs validated for Dell OptiPlex XE3 SFF and XPS 8930

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL19
  • Memory timings19-19-19
  • Rated voltage1.2 V
  • 32 GB total capacity from two 16 GB modules
  • 2666 MHz DDR4 speed rated at PC4 21300
  • CL19 latency with 19-19-19 timing
  • 20 V low-voltage operation for efficiency
  • Guaranteed compatibility with Dell OptiPlex XE3 SFF and XPS 8930

32 GB DDR4 Kit for Dell OptiPlex and XPS

This 32 GB kit contains two 16 GB DDR4 DIMMs rated at 2666 MHz with CL19 timing. It is built for the Dell OptiPlex XE3 Small Form Factor and the XPS 8930 desktop. The modules are unbuffered, non-ECC and run at 1.2 V.

DDR4 2666 Speed and Four-Slot Limit

The memory uses the DDR4 2666 (PC4 21300) standard across 288 pins. The supported platforms provide four memory sockets with a maximum system capacity of 64 GB. All installed modules operate at the speed of the slowest module or the processor limit.

Dual-Rank 16 GB Modules and 64 GB Ceiling

Each 16 GB stick uses a 2Rx8 organisation, giving two ranks per module. A pair fills half the slots and leaves room for a second matched pair to reach the 64 GB ceiling. Systems needing more than 64 GB or requiring ECC cannot use this kit.

How it compares

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

Price $169.99
Cheaper than about 60% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (2 × 16 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $5.31 per GB
Cheaper than about 73% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM2048642666DIMM
Total capacity32 GB (2 × 16 GB)
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL19
Memory timings19-19-19
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsDell OptiPlex OptiPlex XE3 Small Form Factor (SFF), XPS 8930 Desktop
In the box
Included items2 Memory RAM Sticks

Questions about this item

Should I choose the 32 GB kit or aim for the 64 GB maximum?

The kit provides 32 GB using two 16 GB modules; the platform supports up to 64 GB across four slots, so adding a second identical kit later will reach the maximum.

What does the 2666 MHz rating deliver in daily use?

At 2666 MHz with CL19 timing the modules transfer data at the PC4-21300 rate, giving responsive multitasking and smooth application switching on the supported Dell desktops.

Will the 288-pin DDR4 interface work at full speed in my OptiPlex XE3 SFF?

Yes, the 288-pin DDR4 DIMMs are designed for the OptiPlex XE3 SFF and XPS 8930 and will run at the rated 2666 MHz without manual configuration.

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