You have 790 DT.  Not easy to upgrade gpu in DT case because it is low profile and has a proprietary form factor psu. to build a gaming pc out of 790DT, easiest is add low profile video card that has tdp no more than 75W, such as gtx 1050 Ti. It is better to upgrade gpu first before cpu. Top cpu for 790 is i7-2600(k), but upgrade from i5-2400 to i7-2600 does not bring a lot of gaming performance boost. also upgrade ram to 16gb and try to use a ssd to load game faster. user validated cpu for 790
I just bought a optiplex 790 and i wanted to make it into a gaming pc. I have never done any thing with computers so i was wondering how to know what cpu to buy to fit my modal. processor: Intel core i-5 2400, moterboard:dell OJ3C2F. thank you for your time
Im trying figure out what cpu will be compatible with my dell optiplex 790.