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Two green DDR3 DIMM sticks, no heat spreaders

Computer Memory Solutions

Computer Memory Solutions 4GB (2x2GB) DDR3 1333MHz CL9 DIMM for Dell Optiplex 790

SKU CH-EGQ0-88F55

A 4 GB dual-channel DDR3 kit (2 × 2 GB, 1333 MHz, CL9, 1.5 V) validated for Dell OptiPlex 790 desktops

  • Total capacity4 GB (2 × 2 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL9
  • Memory timings9-9-9
  • Rated voltage1.5 V
  • 4GB kit expands Dell OptiPlex 790 memory capacity
  • 1333 MHz DDR3 speed matches system specification
  • CL9 latency with 1.5 V voltage for stable operation
  • 240-pin unbuffered DIMMs install directly in desktop slots
  • Two 2 GB modules populate dual-channel configuration

Dell Optiplex 790 memory kit

This 4 GB kit contains two 2 GB DDR3 DIMMs built for Dell Optiplex 790 desktops. It targets owners of that model who need a straightforward capacity increase without guessing compatibility. The modules are unbuffered, non-ECC and run at the standard 1.5 V for the platform.

Two matched modules simplify installation

The pair is tested together so both sticks operate at the same 1333 MHz speed and CL9 timing. Buyers avoid mixing loose modules that can cause boot failures or down-clocking. The kit plugs directly into the four available slots and works within the system's 16 GB maximum.

DDR3 1333 MHz speed rating

The PC3 10600 specification decides whether this kit matches the board's memory controller. Systems requiring a different DDR generation or a higher data rate will not accept these modules. Check the motherboard manual for the supported speed before ordering.

How it compares

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

Price $19.99
Cheaper than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 4 GB (2 × 2 GB)
Lower than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $5.00 per GB
Cheaper than about 77% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM2566410600DIMM1R8
Total capacity4 GB (2 × 2 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 rank1Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsDell Optiplex 790 Desktops
In the box
Included items2 Memory RAM Sticks

Questions about this item

Will the 1.5 V DDR3 modules need any firmware updates or capacitor replacements over time?

No firmware or capacitor maintenance is required; the unbuffered 1.5 V DDR3 sticks run passively and have no serviceable parts.

What limit appears first when the Optiplex 790 runs all four DIMM slots at 1333 MHz continuously?

The platform caps total memory at 16 GB across four slots, so capacity is the first ceiling you reach.

How much heat and noise do the two 2 GB sticks add when the system runs all day without a heat spreader?

Bare 1.5 V DDR3 modules produce minimal heat and zero noise; case airflow handles the thermal load without extra cooling.

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