1 Copper

What size is the Dell Optiplex 790 MT case?

Hello, I'm planning on moving over all of my PC components to a different PC case before I change my motherboard and cpu. I just need to know the size of the case and probably the motherboard too.

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2 Replies
DELL-Jesse L
Community Manager
Community Manager

Re: What size is the Dell Optiplex 790 MT case?


Click the link below to download the online manual for information and specs for the system.

OptiPlex 790 Drivers, Downloads and Manuals

 Height  36.00 cm (14.17 inches   Width   17.50 cm (6.89 inches)    Depth  41.70 cm (16.42 inches)     Weight Mini-Tower )  8.87 kg (19.55 lb) 




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8 Xenon

Re: What size is the Dell Optiplex 790 MT case?

Its BTX and the Mounting Holes as well as the Front and Rear Panel connections, thermal sensors, Front USB./AUDIO etc are Proprietary.

MICRO BTX (Balanced Technology Extended)

10.5 × 10.4 in (266.70 × 264.16 mm)A standard by Intel as a successor to ATX in 2004,  the layout has better cooling. BTX Boards are flipped in comparison to ATX Boards, so a BTX or MicroBTX Board needs a BTX case, while an ATX style board fits in an ATX case. The RAM slots and the PCI slots are parallel to each other.

Processor is placed closest to the power supply fan.


Specification Year Dimensions of motherboard Expansion slots

BTX200410.5 × 12.8 in (266.70 × 325.12 mm)7
micro BTX10.5 × 10.4 in (266.70 × 264.16 mm)4
nano BTX10.5 × 8.8 in (266.70 × 223.52 mm)2
pico BTX10.5 × 8.0 in (266.70 × 203.20 mm)1

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