He is flashing BIOS with overclocked speeds.i thought they couldnt overclock with the 2 cards in crossfire . i rememeber i read that some where. i wonder how is he overclocking his cards?
Its pretty hard to flash BIOS when you're running on LN2 or DI, because you need to flash back BIOS after you're running out of LN2/DI. With one card you can overclock via AMD tool or Ati tool on fly, but crossfire needs bios flashing on both cards. They do not have coldbug, Kinc tested HD2900XT at -90c, and there was no signs of coldbug. Once again, that was single card, not crossfire.Way aren't they using the LN2[ or even water] on the 2900xt's do they not respond well to negative temps, I know some chips don't. Probably being that close to CPU keeps it chilled though.