AMD two or tiple core can work as QUAD CORE

[ibnanv]

http://www.overclock.net/amd-cpus/535501-amd-phenom-ii-core-unlocking-guide.html

 

[prasadana2]

well u can thats what i love about AMD its for advanced users..
u can over clock and even unlcok the extra core and work..
AMD has More System FSB than intel and its cheaper...