11-02-2013, 07:33 AM
ah yeah, that will do it.
7990 runs at the boost clocks in linux out of the box (1000/1500), so you'll need to use overdrive to push the clocks back down to the stock 925/1375.
7990 is very sensitive to ambient temperature, so make sure you have it in a chilly room. disable fan management in the bios so that the chassis fans are at full chat. set the fan speed on the GPUs to 100% as soon as x11 loads to prevent heat from rapidly building up when starting compute jobs.
the GPU driving the display will always be hotter than the rest, so make sure you have the bare minimum necessary on the display. running things like compiz or whatever compositor the cool kids are using these days will only exacerbate the problem.
7990 runs at the boost clocks in linux out of the box (1000/1500), so you'll need to use overdrive to push the clocks back down to the stock 925/1375.
7990 is very sensitive to ambient temperature, so make sure you have it in a chilly room. disable fan management in the bios so that the chassis fans are at full chat. set the fan speed on the GPUs to 100% as soon as x11 loads to prevent heat from rapidly building up when starting compute jobs.
the GPU driving the display will always be hotter than the rest, so make sure you have the bare minimum necessary on the display. running things like compiz or whatever compositor the cool kids are using these days will only exacerbate the problem.