Phenoms can't run anything faster than 1333 anyway. And thats just single channel. Dual channel they are underclocked to 1066 mhz
And about that, Warsaw is correct that the phenoms are comparable to the FX-4100's, or perhaps its better to say the FX-4100's are comparable to the Phenoms. But think of what it costs you, because the performance gap is not large. The phenoms have a higher price, higher TDP, inferior memory controller, lower clock, smaller L2/L3 cache, and run hotter than the FX-4100's.
Passmark Phenom 965
Passmark FX-4100
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