Hello,
I take my HD4770 bios with gpu-z, ok,
I modified only fan speed to be quiter in idle with RBE 1.22.
Loaded new firmware with dos/atiflash, ok.
Fan speed follow the programmed line (linear transfer function).
But sometimes in 2D (Win 7 desktop), and almost always when running in 3D, the fan goed istantly to a fixed 56% (it's identical to the "spinup cycle %" value) then I listen fast speed-change from 56% to lower % and again to 56% and the fan usually stay locked in this "uncontrolled" status, rarely it returns in normal operation.
Loading original firmware all returns ok (fan speed is always proportional to the temperature)
Windows 7, ati drivers 9.12, fan speed / temp monitored with CCC
What can I do ? Thanks.
PS:
with original firmware the relation between "temp"/"fan speed" monitored with CCC is different from the transfer function seen in RBE.
I take my HD4770 bios with gpu-z, ok,
I modified only fan speed to be quiter in idle with RBE 1.22.
Loaded new firmware with dos/atiflash, ok.
Fan speed follow the programmed line (linear transfer function).
But sometimes in 2D (Win 7 desktop), and almost always when running in 3D, the fan goed istantly to a fixed 56% (it's identical to the "spinup cycle %" value) then I listen fast speed-change from 56% to lower % and again to 56% and the fan usually stay locked in this "uncontrolled" status, rarely it returns in normal operation.
Loading original firmware all returns ok (fan speed is always proportional to the temperature)
Windows 7, ati drivers 9.12, fan speed / temp monitored with CCC
What can I do ? Thanks.
PS:
with original firmware the relation between "temp"/"fan speed" monitored with CCC is different from the transfer function seen in RBE.