8600M GT not hitting overclock speeds

Hey everybody, I used RivaTuner 2.06 and 169.09 drivers, and I overclocked my 8600 to 600/1200/460, yet no matter what game I play, Crysis, for example, the monitoring application built-in to RivaTuner never shows my clocks going over 324/648/229.5, which isn't even normal clock speeds. My lappy runs pretty hot, GPU going up to 91C for those settings, but even at lower temps, like 83-86, it never goes above that. What can I do?

Lappy stats:
Toshiba Qosmio F40
T7700 2.4 Ghz
2 GB RAM
256 MB 8600M GT DDR2

 

First of all, hoping you crept up to that speed and didn't just set it there? Try bumping up in 5 or 10 MHz increments. Do GPU or Memory independently to find their independent stability points. Then clock them together. You can probably safely run GPU at 500 and memry at 425 to start though.

Sounds like system may be throttling itself back but if everything is running hot then RivaTuner may just be wrong. Run some benchmarks and check performance between stock and overclock to verify.

 

Downloa nibitor and check in the bios what the throttling threshold is.

 

htwingnut is right on with his advice - slow increments when overclocking is bet.

 

Well the weird thing is that my 3dmark06 score rises as it should, and seems consistent with everybody else's scores at these overclock settings. So maybe Rivatuner is just wrong?

Here is what should be stock settings:


Here are slightly bumped 540/1080/440:


Here is what I've been playing at, 600/1200/481:


And here is even higher OC, 621/1242/500:


Now, if you notice, Rivatuner's Hardware Monitor shows that I never break 400/700/400, but then how do I get these scores? If someone has any ideas or alternate utilities that can track this, it would be awesome. Thanks.

Oh, and of course I clocked up at small increments, I didn't want to fry my card on my first oc attempt.

 

How are you overclocking? Software or BIOS?

 

I game at 655/1310/512

 

655 GPU? Holy Crap! Also, shouldn't your shader clock be double your GPU, otherwise timing can get screwed up?

 

You are right, I don't know why I put 1200. I know I am running at 655 core, and the other is linked. I edited my post

 

Does no one have an answer for me?

Look at my second post if you missed it

 

RivaTuner does not yet read the clocks for the 8600m correctly just yet. However, it can set them. The shader clock is locked in Sync with the GPU, I forget how many mhz it steps up with each GPU mhz that is increased, however, if its running stable, leave it sync.

 

So is there another app that can show the overclocked speeds correctly?

 

ntune....can also be used to overclock as well. after installing of ntune it will integrate into the nvidia control panel

 

Just assume whatever you set with RivaTuner is what is set.

 

Alright, I assumed that with the increase of over 900 3Dmarks that it was increasing, I just didn't know if it was running at the full 621/1242/500 I set it at.