How-to: Change your ATI Graphics Card fan speeds in OS X
- Thread starter erik
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I am having the same problem. I adjusted the settings and flashed the BIOS under Windows. Fans are nice and quiet there. Reboot to OS X and the fans go up to about 45% as soon as the logon screen shows. It's as though the BIOS change is being ignored somehow.
I am running OS X Lion (10.7.3).
I've combed the forums for answers and nobody seems to have one.
I am running OS X Lion (10.7.3).
I've combed the forums for answers and nobody seems to have one.
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I am working on this at the moment...I had a Windows only 4870 and flashed it to add EFI portion so it would work in the Mac.
In answer to the question from page one of how to extract your original BIOS in Windows Boot Camp use GPU-z that extracts the BIOS..
extract it ..name it ORIGINAL or similar, copy it, work wit the copy and and keep ORIGINAL safe..so if you screw up you can go back to original settings.
On other mac rumour forums there is a post with a working ATI 4870 firmware with EFI section for MAC Thread title was something about dumping the 4870 ROM.. or Golden thread or similar but I won't post a link to it in case I am breaching rules here
In answer to the question from page one of how to extract your original BIOS in Windows Boot Camp use GPU-z that extracts the BIOS..
extract it ..name it ORIGINAL or similar, copy it, work wit the copy and and keep ORIGINAL safe..so if you screw up you can go back to original settings.
On other mac rumour forums there is a post with a working ATI 4870 firmware with EFI section for MAC Thread title was something about dumping the 4870 ROM.. or Golden thread or similar but I won't post a link to it in case I am breaching rules here
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BUMP !!!
I have same issue as others in this thread. I was succesfull flashing the Radeon HD 5770 bios (exactly as OP describe) with new fan speeds and it runs super quiet during PC portion of Hackintosh bootup but when the Apple Logo shows up the fans rev up to same speed as before BIOS flash... seems like the OSX once loaded in GUI mode decides to ignore BIOS values and runs the show himself, based on some generic default values in OSX... unfortunately these generic values are way too noisy... i tried couple Mac fan control apps but NONE OF THEM DETECT ANY GPU FANS...
it makes total sense to edit BIOS ROM on Windows unfortunatelly OSX overides / ignores the settings in GFX BIOS...
anyone had luck ?
I have same issue as others in this thread. I was succesfull flashing the Radeon HD 5770 bios (exactly as OP describe) with new fan speeds and it runs super quiet during PC portion of Hackintosh bootup but when the Apple Logo shows up the fans rev up to same speed as before BIOS flash... seems like the OSX once loaded in GUI mode decides to ignore BIOS values and runs the show himself, based on some generic default values in OSX... unfortunately these generic values are way too noisy... i tried couple Mac fan control apps but NONE OF THEM DETECT ANY GPU FANS...
it makes total sense to edit BIOS ROM on Windows unfortunatelly OSX overides / ignores the settings in GFX BIOS...
anyone had luck ?
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