AMD Athlon 64 X2 4400+ Dual Core Processor Review
 

The X2 4400+ actually uses LESS power than the single core FX-55 processor. The numbers from the 3700+ single core are actually running on a faster, FX-55 processor down clocked to 3700+ speeds, thus the power increase over the 4000+ at the bottom of the graph. Of course, the 4400+ is running on the 90nm, Rev E core and the FX-55 is on the 130nm core, but the power consumption is still a marvel to see. At full load, the X2 4400+ uses 60% less power than the Intel 840 XE processor.

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