The Dell optiplex 790SFF uses a motherboard with an 1155 socket The E3–1270 also uses 1155 BUT it uses an Intel Q65 Express chipset which by itself does NOT support Xeon processors. For this to work you will need a 24-Pin to 8-Pin adapter cable to power the motherboard. 30 GHz ProcessorRaedon 6500 512MB Video Card Can add slow gaming card 1GB 2 monitors plus 25HDMI PortDVDRWGoogle ChromePower 2go,Power DVDComes With power cord, keyboard and mouse. Hoping to find some advice on upgrading a Dell OptiPlex 790 for gaming, and browsing through this forum has given me more information so far than my own research! I've just been given a standard 790 mini-tower, i5 -2400 CPU 3. If you choose the SSD carefully, you can get one for very little money. They are solid performers, we ordered them with graphics cards for dual displays and they run like gang busters. If the memory modules are not in-stalled in matched pairs, the computer will continue to operate, but with a slight reduction in performance. Mini-Tower - Front And Back View Figure 1.
