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Two green DDR3 DIMM sticks without heat spreaders

Computer Memory Solutions

Computer Memory Solutions 16GB (2x8GB) DDR3 1333MHz Non-ECC DIMM Memory Upgrade for Dell Optiplex 790

SKU CH-R91R-FFYXM

16 GB dual-channel DDR3-1333 kit in two unbuffered 8 GB DIMMs validated for the OptiPlex 790 MT, DT and SFF desktops

  • Total capacity16 GB (2 × 8 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL9
  • Memory timings9-9-9
  • Rated voltage1.5 V
  • 16 GB dual-channel kit boosts multitasking headroom
  • 1333 MHz DDR3 speed matches Dell Optiplex 790 spec
  • CL9 1.5 V timing ensures stable operation
  • 240-pin unbuffered DIMMs install in standard desktop slots
  • Guaranteed compatible with Optiplex 790 MT/DT/SFF systems

System-Specific DDR3 Upgrade

This 16 GB kit contains two 8 GB unbuffered DIMMs built for Dell Optiplex 790 MT, DT and SFF desktops. It runs at DDR3 1333 (PC3 10600) with CL9 timings and 1.5 V operation. The modules use major-brand chips and carry a lifetime warranty from the manufacturer.

Upgrading from Lower Capacity or Speed

The kit replaces smaller or slower DDR3 modules to reach the platform maximum of 32 GB across four sockets. Moving to 16 GB is worthwhile when the existing configuration leaves headroom unused or when mixed speeds force the system to run below 1333 MHz. Buyers needing more than 32 GB total capacity or a different memory generation should look elsewhere.

Capacity and Headroom for Everyday Workloads

Sixteen gigabytes handles typical office applications, web browsing with many tabs and light multitasking without paging. The dual-rank 2Rx8 organisation fills two of the four available slots, leaving room for a second identical kit to reach the 32 GB ceiling. Workloads that regularly exceed 16 GB will require the full 32 GB configuration.

How it compares

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

Price $37.99
Cheaper than about 81% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB (2 × 8 GB)
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $2.37 per GB
Cheaper than about 92% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM10246410600DIMM
Total capacity16 GB (2 × 8 GB)
Product type240-Pin DDR3 SDRAM
Performance
Rated speedDDR3 1333 (PC3 10600)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL9
Memory timings9-9-9
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsDell Optiplex 790 Mt/Dt/Sff Desktops
In the box
Included items2 Memory RAM Sticks

Questions about this item

Does this 240-pin DDR3 kit fit the four DIMM slots in a Dell Optiplex 790 MT, DT or SFF chassis?

Yes, the modules are 240-pin DDR3 DIMMs and the Optiplex 790 MT, DT and SFF desktops each provide four DDR3 slots, so the two sticks install directly.

What is the correct way to seat the 240-pin modules so the motherboard latches engage on the Optiplex 790?

Align the notch on each module with the slot key, press straight down with even pressure on both ends until the side latches snap closed automatically.

Will the 16 GB kit need any firmware updates or battery changes during its service life in the Optiplex 790?

No, DDR3 memory has no firmware and no onboard battery; the only later action might be adding two more 8 GB sticks to reach the 32 GB maximum supported by the system.

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