Anandtech has released a new article: Intel Core 2 Extreme QX6800: The Fastest Desktop CPU, now with more cores. However the real story is the price cuts that AMD and Intel have announced. It appears that both are speed/price competative again.
Intel sweet spot: e6400/e6600
AMD sweet spot: 6000+
I highly recommend that if you are in the market for a new cpu that you read this article: http://www.anandtech...l...?i=2963&p=2
Anandtech did point out that if you are currently running an intel dual core cpu, that waiting till the new Penryn core is released is advised.