Olaf shared his process for cooling down an over-clocked and flashed ATI 7000 card.
I have flashed a low profile ati 7000 agp (pc)card to a mac. This card (about 35 dollar) fits perfect in a cube. vga and tv out. the only problem was the heat.
The pc card was designed with a 150 mhz cpu. The original mac 7000 edition has a 183 mhz cpu. So if you flash a low profile pc card to a mac then you have overclocked the card with 33 mhz, and the card got to hot and unstable in osx.
There was a 166.rom. this makes osx stable but the icons get a bit cripsy (white different dots).
I used ATIccelerator (http://thomas.perrier.name/software/ATIccelerator.html) 1.0.2 to cool down the card.
startup in os 9 > use ATI Multi Dumper to get the rom
startup in osx > to modify the rom (i used 133 mhz for each)
startup in os9 > to flash the modified rom
The card works great now and the icons are not cripsy . quartz extreme works great. and also expose and that for only 35 dollars. tv out works too by the way.
Full discussion is in this forum thread. The referenced files are attached below. NOTE: Older 0.9 version _ATI_OC_Tool_0.9.dmg_ supports the underground Radeon 9100 ROM and is uploaded here for archival purposes. Always check http://thomas.perrier.name/software/ATIccelerator.html for the most current version of ATIccelerator as it is updated frequently.
