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Green bare circuit board with black memory chips and gold edge connector

Computer Memory Solutions

Computer Memory Solutions CM5126412800DIMM 4GB DDR3 1600MHz memory upgrade for Dell Optiplex 790 MT DT SFF

SKU CH-1DEP-WKZSX

4GB DDR3 1600MHz unbuffered DIMM validated for Dell Optiplex 790 MT, DT and SFF desktops

  • Total capacity4 GB
  • Rated speedDDR3 1600 (PC3 12800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL11
  • Memory timings11-11-11
  • Rated voltage1.5 V
  • 4GB DDR3 module adds responsive capacity for everyday tasks
  • 1600MHz speed with CL11 timing delivers quick data access
  • 5V unbuffered design runs cool without a heat spreader
  • 240-pin DIMM fits Dell Optiplex 790 MT, DT and SFF desktops
  • Single 4GB stick leaves three slots open for up to 32GB total

Dell Optiplex 790 memory upgrade

This 4 GB DDR3 module is built for Dell Optiplex 790 MT, DT and SFF desktops. It uses a 240-pin DIMM form factor and runs at 1600 MHz with CL11 timing. The kit contains a single unbuffered, non-ECC stick.

Low-voltage DDR3 operation

The module runs at 1.5 V and has no heat spreader, keeping power draw modest in normal office workloads. Passive cooling is sufficient for typical desktop use. Noise and thermals remain at stock system levels.

Adds capacity to compatible Optiplex 790 systems

The platform supports up to 32 GB across four sockets, so this stick suits builds that need more multitasking headroom. It is not for systems that require ECC or registered memory. Buyers needing higher density per slot or faster speeds must look elsewhere.

How it compares

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

Price $11.99
Cheaper than about 96% of the 21,161 comparable items (median $397.99).
Total capacity 4 GB
Lower than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $3.00 per GB
Cheaper than about 90% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM5126412800DIMM
Total capacity4 GB
Product type240-Pin DDR3 SDRAM
Performance
Rated speedDDR3 1600 (PC3 12800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL11
Memory timings11-11-11
ECC supportNo
Buffer typeUnbuffered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsDell Optiplex 790 MT/DT/SFF Desktops
In the box
Included items1 Memory RAM Stick

Questions about this item

How do I install this 240-pin DDR3 DIMM in my Optiplex 790 and which step is often missed?

Align the notch on the module with the slot key, press firmly until both side clips click shut, then verify the BIOS shows the new 4GB at 1600 MHz.

What maintenance or replacement will this CL11 1.5V module need over time?

No scheduled maintenance is required; if a stick fails it is covered by the limited lifetime warranty from Computer Memory Solutions.

What limit appears first when this 1Rx8 unbuffered kit runs sustained workloads?

The system maximum of 32 GB across the four slots is reached before any thermal or voltage ceiling on this module.

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