hi, i have a little problem with my crosfire setup! i have 2 ati radeon 3870 in crossfire,motheboard abit x38, intel q6600.the first card in the pci x16 slot is a HIS 3870 pasively cooled, and the second card is a SAPPHIRE 3870 with fan, but it is in the x4!!! pciex slot.Now,the problem is the second card, the sapphire one!doing crossfire in this configuration ,the card works great, silent, with the fan going 50% speed in load, at 90grd,scoring 15 000 in 3d06!Now if i put this card in the SECOND X16 SLOT, DOING X16 -X16 CROSSFIRE, WELL, the fan goes in seconds at 100% in load,the card runs hotter, and the noise.......!!please help!!!!! I have tried changing drivers, OS, but no luck!the only way for my to do crossfire now is x16 - x4 slot for the second card!!!