[H]ard|OCP found some X2s clocked a little lower than the ones they have been benchmarking recently, in the hopes of getting some overclocking done.  After reaching 2.7 GHz, an increase of 1/2 a GHz, at a 340 MHz processor bus, and the RAM humming along at 1088MHz, they concluded that yes, there is some potential there.
“While testing some of our first socket AM2 AMD processor-based motherboards, we have of course been doing some overclocking. Since we were originally supplied with high-end FX-62 and 5000+ AMD Athlon 64 FX and X2 parts, we did not have much processor headroom when it came to overclocking. Yesterday we were delivered two brand new AMD Athlon 64 X2 4200+ processors.

These are 512KB L2 cache parts that are not of the ‘low wattage’ variety (and we mention this as we certainly want to get our hands on those soon). These parts are rated at 89W Thermal Power while the low power parts are rated at 65W. Still as you will see below, there is plenty of overclocking performance to be had in these somewhat less expensive dual core processors.”

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