Upgrading Optiplex 7070 PS & GPU

This is a professionally written guide on 7070 MT upgrade. note that ##40 through ##70 MT chassis have the same dimensions.

these are 6 inch smaller in depth compared to ##20, ##10, #90.  Dell intended to make smaller business towers.

https://www.hardware-corner.net/guides/optiplex-7040-upgrade/

“There are two parameters you need to be careful about – the GPU length and GPU height. In terms of height, don’t go over 5.5 inches (140 mm), this is the maximum you can go and still conveniently close the case lid. And because the case is now shorter the length is also reduced – 9 inches (230 mm) or less.”

“It is important to consider GPU size when using OptiPlex 7040, 3040, and 5040. This is primarily due to the slimmer and shorter case compared to the xx20 version. As a result, there is a smaller selection of GPU models available.”