Radeon X1800 XT (GPU: 1 GHz / Memory: 1 GHz)
 

I think this is the first time in world when graphics card breaks the 1 GHz barrier! On CPU side we saw this 6 years ago when Intel and AMD were really pushing Athlon and Pentium III to 1 GHz.

http://www.muropaketti.com/3dmark/r520/ghz/
src: http://www.xtremesystems.org/forums/...ad.php?t=77157