i have an am3 socket and i wanna get a nice am2+ processor but would it work/fit or should i save up and just get an am3 one?
i have http://i.imgur.com/0sdeD.png
and want http://www.provantage.com/amd-adx645wfgmbox
would it work?
So you have an Athlon II X2 250 which is a AM3 CPU!
You want to replace it with an Athlon II X4 645 which is as well a AM3 CPU!
In most cases that will work but there are some boards out there that have a wattage limit on the CPU so without knowing what board you are using I can not say 100% but very likely since the X4 is only 95 watt TDP!
Really do not understand why you are bringing the AM2+ socket into this discussion.