AMD Athlon II X2 255 3.1GHz 2x1MB Socket AM3 Dual-Core CPU AMD Athlon II X2 255 3.1 GHz Socket AM3 Dual-Core CPU General Features: AMD Athlon II X2 Dual-Core processor Model 255 3100 MHz (3.1 GHz) Core Speed 2 x 128 KB L1 cache 2 x 1 MB L2 cache Socket AM3 32/64-bit operating mode 0.85 - 1.40V voltages C3 Revision 74 C maximum temperature 45 nm SOI CMOS 65-watts AMD PowerNow! Technology (Cool'n'Quiet Technology)