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Two green SO-DIMM sticks with black chips, no heat spreader

Computer Memory Solutions

Computer Memory Solutions CM2048642666SO 32GB (2x16GB) DDR4-2666 SO-DIMM CL19 1.2V 2Rx8 D39

SKU CH-G0J4-8CYY8

A 32 GB DDR4 SO-DIMM kit built for Dell OptiPlex 7070 Ultra and Precision 5540 systems

  • 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 for demanding workloads
  • 2 x 16 GB matched kit enables dual-channel performance
  • DDR4 2666 MHz speed with CL19 timing
  • 2 V low-voltage operation reduces power draw
  • Tested compatible with Dell OptiPlex 7070 Ultra and Precision 5540

Dell OptiPlex and Precision Compatibility

This 32 GB kit contains two 16 GB DDR4-2666 SO-DIMM modules built for Dell OptiPlex 7070 Ultra and Precision 5540 systems. Each stick uses a 260-pin layout, runs at 1.2 V and carries CL19 timings of 19-19-19. The unbuffered, non-ECC design matches the factory specification for these platforms.

Core i5, i7 and i9 owners only

Buyers with Intel Core i5, i7 or i9 processors can use this non-ECC memory directly. Systems equipped with Intel Xeon CPUs require ECC UDIMM modules instead, so this kit will not function in those configurations. Anyone needing more than 64 GB total capacity or a different form factor should look elsewhere.

Matched pair for dual-channel operation

The two modules are sold as a matched pair to enable dual-channel performance on the two available sockets. Mixing with other memory brands will force all modules to run at the speed of the slowest installed stick or the processor limit. A 64-bit operating system is required to address the full 32 GB capacity.

How it compares

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

Price $170.99
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 $5.34 per GB
Cheaper than about 72% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM2048642666SO
Total capacity32 GB (2 × 16 GB)
Product type260-Pin DDR4 SO-DIMM
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 7070 Ultra, Precision 5540
In the box
Included items2 Memory RAM Sticks

Questions about this item

Which Dell models must I already own for this 260-pin DDR4-2666 kit to be guaranteed compatible?

The kit is validated for Dell OptiPlex 7070 Ultra and Precision 5540 systems.

If I keep an existing 16 GB DDR4-2666 module, will the 2Rx8 1.2 V sticks run at the same speed?

All installed memory runs at the slowest module or CPU limit; matched pairs are recommended for best performance.

How can I verify the 32 GB kit is operating at DDR4-2666 CL19 after installation?

Check the memory speed and timings in BIOS or a system-information tool; they should show 2666 MHz and 19-19-19.

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