Can a optiplex 745 use a i5 processor

[Jordon1556]

Hi all, I have a Dell 745 DT, I just recently I installed a graphics card which is a ati radeon hd5570, and 4 gbs of corsair gaming ram, But I was wondering, could my PC use an i5 or i7 processor, I am upgrading my HDD and OS before i get a processor, but I want to find out if i can use on of these great cpus. Oh and the reason I even brother to upgrade is because I'm getting ready for Skyrim.

 

[hunter315]

The optiplex 745 is from the Core 2 Duo era, all of them are LGA 775 motherboards so they wont work with any of the new processors.

 

[jaguarskx]

The 1st generation of Core i5 CPUs are socket 1156. The 2nd generation of Core i5 CPUs are socket 1155.

They are incompatible with socket 775 motherboard.