Dell Optiplex 790 compatible mid range GPU? specifically HD 6850?

[CAT-THE-FIFTH]

So What's the best card that I can put in my mobo? For gaming.

The cards which draw less than 35W will barely be better than what you have now. This is why you need to clarify whether it is a limitation due to the 265W PSU or a motherboard slot limit.

[1stRaven]

not sure if this helps but this is the list of gpu's that Dell will provide from factory for the 790 on my prem pages.

[Voxata]

You most definitely can, however you WILL need to upgrade the power supply. Choose one that is the same measurements as the stock power supply - I chose a Silverstone 600w Strider. I then had to drill out the HDD cage to remove it so my graphics card could fit and tossed in an ATI 6950 2GB videocard. This is a highend card for this system for sure - runs games like a dream now.

I have the i3-2100 version with 4GB Ram. Obtained this unit used for 150 dollars.