Beej wrote^THIS.
Also just to be sure, u need a 550w and up psu fo the 560ti. Also as for overclocking on your current board will NOT help much. Also upgrading to an i5/i7 on your current motherboard to go with the 560ti @ your current resolution is NOT worth it. Ypu can already MAX out most/all games at your resolution via 560 ti, trust me on this.
who told you that i don't know these things...
i already got a new Inwin IRP COM750W PSU but its RMA-d now...thats why i am not updating my signature...
and i know that my motherboard isn't overclockable but hopefully i will find a new one...and i am not upgrading the CPU just for the games....i am a power user,and also i HATE loading time LOL :P