What socket type is on the dell optiplex gx260 motherboard
I was just wondering, what type of socket does a dell optiplex gx260 motherboard have (775, 423, 478, etc)? I am trying to replace the old processor (pentium 4, 1.7ghz) with a new pentium D (775). Is there a way to find out with type of processor without opening the case? Am strongly thinking that its a 478, but hoping am wrong. Thanks in advanced.