ok thanks guys.
Didn't read much about 8X and 4X but did some research about PCIX and AGP before i decided to get the FX5500.
I was thinking of building a new PCIX PC but after some reading on the subject i've decided to wait untill new games that requires Dual Core Processor and kick a** GPU's to up grade. So i'm saving my bucks for next year either for everything Dual Core PC or a PS3. I just hope i can wait that long.