grafic

What is overclock? Why its require .how to overclock a processor n grafic card.can someone overclock a processor or grafic cards .after guide and well known abt overclock.which component r require when over clock a processor/grafic card. I dont know anything abt overclock.so guys ple tell me in...

I ll buy a mid range gaming configuration.now i hv no money for buy gtx 660 2gb.after few month i ll buy it. so Guys can i run the computer without grafic card psu-650w cpu-intel core i5 3450. 650w psu can effect the computer without grafic card or nt

Is there any software that will help my internal video card to support h & l, prixel sader etc. my motheboard is 845gl with no grafic slot.