Difference between FX-55/57 and 4000+?

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One difference is the FX chips are unlocked multipliers, while the 4000+ is locked upwards.
I forgot about that, that's a good point. Also depending on core, I think the SD runs at lower voltages.

Are you going to OC your CPU and Vid card?
Definitely a must for the CPU, depending on how high end of a video card I get, I may.
 
FX57 has had a high freq,it's not easy to oc higher
Athlon64 3000+(Venice) is good at oc,it can oc from the default to 2.6ghz!!,the performance after oc is amazing...
it almost can catch up with FX55...