The question has been sufficiently answered, and yes, the Core2Duo spanks the AMD. Just thought you might be interested in a little useless trivia.
Intel and AMD have been developing their dual cores for quite a while now. AMD bought up ATi and 4 other companies, not for their techs, but for their fabs. They dismantled most of ATi and retrofitted the fabs to produce processors. AMD made a prediction that they would ramp up shipments by 65% in the next few years, but they didn't have the fabs to do it. They spent a few billion on each fab to retrofit them. In the meantime, Intel was spending billions to retrofit each of their fabs.
Intel made a deal with AMD. They gave them a six month deadline to market the AMD dual core processors before Intel unleashed the C2D. For six months, AMD fanboys got to rejoice in the performance. At the six month mark, true to the agreement Intel unleashed the C2D and suddenly the fanboys went silent.
AMD licensed some of their tech to Transmeta, who doesn't actually fab processors, just designs them. Transmeta sued and settled with Intel for patent infringements. It's to Intel's advantage to have AMD as a "competitor", thus the agreement, allowing AMD to recover some of it's costs. I don't think the paper-company Transmeta impressed them much, however.
