Overclocking 8600M GT/GS with NEWER drivers (not stock)

When I try to overclock my C90S with the 8600M GT using any overclocking tool (rivatuner, atitool, ntune) I can change the clocks but the sliders wont stick. It just goes right back to default clocks. This occurs whenever I use a driver higher than the 158 series (ex: 162.x and up). The reason I need to overclock with the 162 drivers is that the 163.11 beta drivers are the ONLY ones ive found that dont overscan using my HDMI output to HDTV. The stock gpu speed is 475 core/ 400 mem. It is NOT an issue of overclocking too high as I have been able to go way higher (even over 500/500) with older drivers (158 series and down). It is also not a overclocking tool issue as it does not work with any overclocking tool in ANY OS. I have already tried vista 32bit/64 bit and xp 32bit/64bit. Thanks

 

Known problem with these drivers...

I don't think there is any solution...

 

same problem I have too http://forum.notebookreview.com/showthread.php?t=140263 . I haven't seen many people talk about it though, so I assumed that it was just a strange problem.

so, do the 158 drivers perform as well in gaming as the 162 drivers in gaming (windows xp). If then I'll just stick with that and OC

 

i dont know about xp but in vista the 162 and 163 are much better

 

Glad to finally find a thread about it...thought i was the only one.

Because i have the same problem too, i have a 8600M GS on my laptop and i could overclock it easily with modded inf or not with the drivers 158.x, or 101.x,
using either riva tuner or nvtune.

Actually i am using the 158.45, best so far for performances under vista for dx9/dx10.

But when i tryed to overclock the 162.x or 163.x, when i click apply on the clock window, the values are freezed to the default values.

so as the overclock is not working, i stay with the 158.45.

 

ALL 162.xx and 163.xx have OC problems

158.45 is the only driver perform better with OC or without OC..,so I'm recommend 158.45

 

I ended up flashing my gpu bios with higher clock speeds using nibitor and nvflash. Its pretty easy to do, but you should test out the speeds you want to flash by running 3dmark looped. I looped each test 20 times in overclock mode with speedfan and nv monitor running to make sure it didnt get too hot. I ended up flashing to 530/530. This way I dont have to worry about overclocking and all i have to worry about is overscan and video tearing when using the hdmi out to an hdtv. You can find some drivers that fix the overscan but there is no such thing as fixing the video tearing. You can swap the order of the displays in control panel and get no tearing on the primary but youll get tearing on whatever the secondary display is. I did all the xp test the the driver I ended up using was the DNA Forceware 158.22. Select "laptop" and "performance" during setup. After setup files are extracted, delete the Direct3d and OpenGL tweaks from the .inf file. They are easy to find as there is a big label above them.

 

I also wanna do Low(Bios) level OC could you please post some guide how you do that...

 

IMPORTANT: Overclock the gpu first then run 3Dmark06 with each test looped for a VERY long time. This is to test the speeds. I ran the test looped overnight myself.


Download nibitor and nvflash 5.40. Read your current bios into nibitor and save it to a flash drive. Change the core/shader/memory clocks of the bios and save it as a different file. Copy the bios from your flash drive to something else to save it. Download the hp bootable flash drive maker or just make a bootable flash drive using something else. copy the nvflash files, the old bios, and the new bios to the bootable flash drive. set the boot order to boot to removable media FIRST (very important!). boot to the flash drive. type "nvflash xxx.rom" where xxx is the new bios filename, hit "y" when asked. If there is a problem and you cant get video to come up on the laptop you can just boot blindly from the flash drive, type "nvflash xxx.rom" (xxx=old bios), wait a second then press "y" to flash it back to the original without having to see the screen.