The problem here is when you feed the FX-55 with too much pie, it spits it back out at you, while the X2 4800+ appears to be hungry for more and more... Remember to be realistic, the Athlon 64 X2 is an expensive alternative to the Athlon 64 FX-55 and if you are sensible with your computing habits, you will not find the Athlon 64 FX-55 or 4000+, for that matter, being overstretched by your needs.