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Green circuit board with black memory chips and gold contacts

Computer Memory Solutions

Computer Memory Solutions CM2048642666DIMM 16GB DDR4 2666MHz CL19 1.20V 2Rx8 288-pin DIMM memory upgrade

SKU CH-S861-PM4YZ

16 GB DDR4 DIMM running at 2666 MHz with CL19 latency for Dell OptiPlex XE3 SFF and XPS 8930 desktops

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL19
  • Memory timings19-19-19
  • Rated voltage1.2 V
  • 16GB capacity adds headroom for multitasking and large files
  • DDR4 2666MHz speed keeps data moving at PC4 21300 rates
  • CL19 timing with 19-19-19 cycles delivers responsive access
  • 20V operation reduces power draw and heat output
  • Validated for Dell OptiPlex XE3 SFF and XPS 8930 desktops

16GB DDR4 2666MHz DIMM upgrade

This 16GB DDR4 module runs at 2666MHz with CL19 timing and 1.20V operation. It uses a 288-pin unbuffered non-ECC design with 2Rx8 organisation. The stick is built for Dell OptiPlex XE3 SFF and XPS 8930 desktops.

Replaces slower DDR4 or fills empty slots

The upgrade moves a system from lower-speed DDR4 or from a single-channel configuration to dual-channel bandwidth. The jump is worth it when the platform supports 2666MHz and has a free 288-pin slot. Mixing with slower modules will force all memory to run at the lowest common speed.

Handles 64GB total across four sockets

The platform accepts up to 64GB using four DIMM slots, so this 16GB stick leaves headroom for three more modules. A 64-bit operating system is required to address more than 4GB. Buyers who want more storage or need ECC registered memory should look elsewhere.

How it compares

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

Price $80.99
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 $5.06 per GB
Cheaper than about 76% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM2048642666DIMM
Total capacity16 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 items1 Memory RAM Stick

Questions about this item

Will this 288-pin DIMM fit the four memory slots in a Dell OptiPlex XE3 SFF?

Yes, the module uses the standard 288-pin DDR4 DIMM form factor that matches the four slots in the OptiPlex XE3 SFF and XPS 8930.

Do I need to install the stick in a specific slot or pair it with another module for the system to boot?

The system will boot with a single stick in any slot; for best performance install a second identical module to run in dual-channel mode.

If I add more memory later, what is the maximum capacity the platform supports?

The platform supports up to 64 GB total across the four sockets, so you can add up to three more 16 GB modules.

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