Legit Reviews has posted their review on the Intel Core 2 Extreme QX6700 Processor

Intel has been cranking out impressive processors during 2006 and it looks like Intel has any intentions of bringing that to an end any time soon. The first Intel quad-core processor looks to be a winner in a number of ways, but the most important is the fact that many motherboards that have the i975 Express chipset need nothing more than a BIOS update to enable quad-core support. When it comes to applications that take advantage of four cores no other desktop processor from AMD, or even Intel for that matter, come close to the performance levels that we have recorded with quad-core.

Intel Core 2 Extreme QX6700 Processor Review