Adrgha Posted October 24, 2008 Report Share Posted October 24, 2008 (edited) I was fiddling around with RivaTuner today, when I noticed my 8600M GT does not clock down to 2D clocks in Windows, instead it runs low power 3D clocks. It clocks up to 3D clocks as normal when a 3D application is launched. I've tried disabling Aero, but that didn't help. I'm using the newest 180.42 drivers and Vista Ultimate 64bit. Has anyone experienced anything similar? Edited October 24, 2008 by Adrgha Quote Link to comment Share on other sites More sharing options...
zipper Posted October 24, 2008 Report Share Posted October 24, 2008 Yes, it's perhaps the default (bugged) behaviour. Quote Link to comment Share on other sites More sharing options...
Adrgha Posted October 24, 2008 Author Report Share Posted October 24, 2008 Yes, as in you have the same problem? It's quite annoying, I have to say. I bet I lose quite a bit of battery life because of this. Quote Link to comment Share on other sites More sharing options...
Morris Posted October 24, 2008 Report Share Posted October 24, 2008 I just changed my lower 3d profile to 150/300/150 mhz so i am gaining a lot more battery. I did that in the bios though Quote Link to comment Share on other sites More sharing options...
Adrgha Posted October 24, 2008 Author Report Share Posted October 24, 2008 I just changed my lower 3d profile to 150/300/150 mhz so i am gaining a lot more battery. I did that in the bios though In the system bios or in the VGA bios? So this is really a known problem for the 8600M GT? Quote Link to comment Share on other sites More sharing options...
Adrgha Posted October 24, 2008 Author Report Share Posted October 24, 2008 (edited) Ok well, I enabled low level 3D clock adjustment in RivaTuner, and set them to 150/300/150 (core/shader/memory). I believe the card lowers the voltage for 2D clocks though, so I'm not getting the full power saving potential out of it, but it's better than nothing I guess. Edited October 24, 2008 by Adrgha Quote Link to comment Share on other sites More sharing options...
Guest Dan Posted October 25, 2008 Report Share Posted October 25, 2008 Ok well, I enabled low level 3D clock adjustment in RivaTuner, and set them to 150/300/150 (core/shader/memory). I believe the card lowers the voltage for 2D clocks though, so I'm not getting the full power saving potential out of it, but it's better than nothing I guess. FWIW, the 8600M GT in my macbook pro downclocks to the 2D settings properly in windows XP. But i guess you're in Vista and thats the issue? What drivers have you found to be best for the 8600M GT and allow overclocking? So far i've only had luck with the 160.04s. Nothing else i've tried will let me OC. Quote Link to comment Share on other sites More sharing options...
Adrgha Posted October 25, 2008 Author Report Share Posted October 25, 2008 FWIW, the 8600M GT in my macbook pro downclocks to the 2D settings properly in windows XP. But i guess you're in Vista and thats the issue?What drivers have you found to be best for the 8600M GT and allow overclocking? So far i've only had luck with the 160.04s. Nothing else i've tried will let me OC. Well, I actuallly managed to fix it yesterday. I rolled back to the 178.84 drivers and all is well. It changes as it should between 2D/Low power 3D/Performance 3D now. I've been running Performance 3D at 675MHz core, 1458MHz shader and 900MHz memory since I bought this laptop in june. I've not had any problems overclocking with any of the drivers I've tried. I guess drivers for Macs are a bit different? Quote Link to comment Share on other sites More sharing options...
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