Intel X6800 Core 2 Extreme Dual Core Processor Review @ Tweaknews.net
 

But where does this processor really fit in? Is it worth the ~US$1000 current
pricetag or is there something that is faster from Intel that can be purchased for
the same money? Well, for one thing, you won't need a new motherboard if you stick
to the 1066Mhz FSB, but with the quad-core line dropping in price, will this
processor be deemed the black sheep of Intel's higher end processor lineup?


http://www.tweaknews.net/reviews/intel_x6800/