AMD Phenom II X2 555 BE
 

Dual-core, tri-core or quad-core - the question of the day. If you want ultimate performance, you have to choose quad-core.. ..or do you? Some of the AMD Phenom II X2:s can be unlocked to full X4:s. Let's have a look how our AMD Phenom II X4 555BE performs in tests and can it be unlocked ?
http://www.rbmods.com/content/20267/introduction.aspx