8600m GT problem

I have a mpb with a 8600m GT DDR3 clocked 500/700/1200. It runs fine in-game averaging around 85 C. However, one to two hours in the game the temperatures will drop to 78-80 C and my frame rate would either drop drastically or I would get freezing every couple of seconds making it unplayable. My clocks are still the same and it happens on different games. Anyone knows what the problem is?

Vista 64 bit
4 GB Ram

 

Looks like a clear case of overheating.

When the cards reaches the critical temps, it will downclock itself in order to cool down the temperature.

Even if it overheats or not, try playing without overclocking the cards and see if it happens again.

 

My clockes are still the same when it happen. I lowerd it to stock clocks and it is still happening.

 

One question: does it happens to you in every game you play, or only in a specific game?

 

well your gpu is known for heating issues with or without overclocking a way u can sort of fix it is by undervolting cpu: http://forum.notebookreview.com/showthread.php?t=235824, cleaning out the vents, and re applying thermal compound i recommend ICD7: http://www.heatsinkfactory.com/ic-diamond-7-carat-thermal-compound-15-gram-p-16605.html

 

It seems to happen on steam games that I play on (L4D and TF2). I already cleaned my vents out. Also I play on an external hard drive.

 

Stick it in the oven!

 

If you play on the external hard drive, then this couple of freezing seconds may be due to the hard drive accessing some information.

 

I think its still "semi-alive" haha.

We will fry GPU when we know its in shock!

I dont think GPU could be overheating at 85C, i would try a graphics update prehaps?

(Dont know too mucha bout macs but will try and help)

Sometimes if a HDD is slow it will jam to load the textures etc (i have this with 4200 rpm on bf2 with max details) the lappy can play the game, but it takes 1 whole round for all textures to be loaded.

 

You can customize the vBIOS to change the temp at which the card downclocks. This could solve your problem.

The truth is though, my 8600m GT still has downclocking problems even after I've done tons of BIOS mods. This is why I'm getting a new mxm module.

 

That is kind of an important 'besides' to throw in.

Have you tried installing & running a particular game on the mbp's local drive? As lozanogo has already pointed out there could be a read/write delay between the notebook and exHDD.

 

Run it on the internal HDD, and try a new driver.