Although I doubt this will last very long I got 28000 out of my poor old Gainward 6600GT GLH.
I manged to accidentally put 1.85v through the core ( standard 1.45v ) ..twice :D and 3.9v through the 2v GDDR3 memory when I confused between the ISL 6534 and 6549, but still it came up trumps.
http://service.futuremark.com/compare?2k1=8416228
I've never in my life had to change the gpu MHz and gpu core voltage so much on a chip within a run to stop it getting too hot .. stupid 0.11 micron process without low k, this does not bode well for overclocking the X800XL unless cooled with water or phase.
Although this will get zapped pretty quick by people not using only air and using SLi at least I was there first.
How close was I to the limit ? It took me a week and here's a picture of dragothic on an average run. That pixel is upsetting all my green triangles ;)
http://www.aocb77.dsl.pipex.com/6600run.jpg
:D
Regards
Andy