t-break has posted a review on the ATI Radeon X1800XT

It sure took a long time coming but the R520 from ATI that is officially labeled as the x1800 is finally here. ATI representatives say that the delay was caused due to a problem with current leakage in transistors and trying to find that is about the same as trying to find a needle in a haystack considering the millions of transistors present in the core. The good thing that came out of this extensive problem solving sessions is that the design of the R520 kept getting better and better and because of this, the final production sample of the core is clocked almost 150MHz higher than what ATI had originally planned.

ATI Radeon X1800XT Review