m50vm t9400 rising to 100C on orthos stress, help.

Hi guys , long story short, I got my asus m50vm which has a penryn T9400, I never quite bothered to check temps on my laptop, till I started to feel it warm and fan keep on blowing.
I opened the bottom plate , and unscrewed the heatsink and found the thermal paste was solidified , so I removed it with a plastic cc. I cleaned it with isopropyl alcohol rubbed it well, and placed As5. Then I did something stupid I twisted the heatsink and one of the corners of the cpu die got a little bit scratched and tiny bity bit got broken but you can't even see it, I also scratched a little bit the die. So I don't really know if temp went this high before I even did all this about removing the thermal paste it had , or it started afterwards. So I don't know if a tiny scratch or what happened to the corner could be affecting the temp ? but I don't even know if this happened before.
I need some help from you guys . As I couldn't even solve this problem temp reaching that high with stress test under orthos. Today I bought a copper shim 1mm thick , placed it under the cpu core but temps still under 100 C under orthos stress, and as soon as I press start on orthos temp rises almost instantly to 100c. Could the heatpipe not be working properly, goes to the CPU and then to the mobo northbridge.
Something to take into account , cpu it's 2.53Ghz, and it's throttling but fluctuating in this order 2527 -> 2394 --> 2260 --> 2394 --> 2260 --> 2527. but it keeps on that order. I honestly don't know what else to do.
I also bent the heatpipe a little bit downards cause I thought It wasn't doing contact the copper plate with the core, I don't think I screwed the hteatsink but bending it a little bit. .but.. IT might, also how can I check its workin fine.
Hope you can help me out ! thanks

 

I would recommend you re-check your application of paste. Also, would highly recommend upgrading to ICD over AS5. ICD you just put a line on the dye and mush it down with your Sink. When you re-check it, look to see that you have a solid inprint on the heatsink of the dye. if not, you dont have enough thermal compound to bind the heatsink to the dye.

 

Hey thanks for your reply, I'm not able to get ICD on my country, best thermal paste I can get is as5 o mx2 . But i alredy bought a tube of as5. Question is how much as5 should I place on top of the die just a grain of rice? .Some ppl say just a grain of rice and place the haetsink on top to smash it.. some other say to spread it. What I'm doubting is if the heatsink is doing enough contact with the die , now I got it with the copper shim in the middle and temp with orthos is the same as without the copper shim.

 

AS5 is finiky unlike the new stuff these days. AS5 requires you to carefully spread it over the dye evenly. But sometimes with temps like that, things can warp and may not be making full contact. I would look at it, see if you have a full, clear imprint on your heatsink, if not, then apply a little thicker and let sit. Also note that AS5 has a required "burn-in" time that according to others is generally around 200hrs of up and down use. Others are instant and require no burn in times.

 

Hey !
I have a m50vm also and I was experiencing some heat issues also. Then, I decided to try the undervolting thing and it worked so well ...
The problem that I'm having now is with the gpu, that's about 60ºC on idle :T

But, I guess you should try undervolting, it did worked for me

 

The best would be to send it back to ASUS if you had warranty.
But as you have already removed the heat sink, that mean you broke the sticker and warranty would be viod.

I also own M50VM for 1.5 years now, but I so far had no overheating problems with it.
In my M50Vm the normal GPU temperatue is about 54°C and with the stress test it goes up to maximum 69°C.
My T9400 CPU temperature usually in normal office work stays around 50°C and when I run a stress test it only goes maximum to 65°C.

 

Hi Turbogear, could you run an orthos stress test small ffts, and tell me if it rises temp fast up to how many degrees C . thanks a bunch. By the way which bios version you got ? Also could you run CPU-z and tell me which voltage is your t9400 using when at 100% load .

 

Hi daaudio,

I ran the orthos stress test small ffts for 5 minutes. The temperature was going up t 67°C and then coming back to 66°C.
The room temperature during test was 23°C.

The Core voltage of T9400 under stress was 1.15V.

The bios version that I am using is 212.

 

Hi Turbo,

could you please check if the cpu voltage fluctuated , from 1.15V to 1.2 or 1.15 down to 1.0 down to 0.95 or was stable @ 1.15v it's really important. Need to be sure about that.

 

Hi daaudio,

I ran the stress test again to check that.
The Core voltage was stable all the time at 1.15V.
The Frquency was stable at 2527 MHz.

I am using the Power4Gear at high performance mode all the time. The maximum processor state is set to 100% and the minimum is set to 30%.
When you did the test was it also on this mode?

 

Dunno but I'm running w7 on this lap , I installed intel chipset inf driver, but could it be that it's doing something on the cpu voltage? or it's set aside from how the cpu works. I mean if you install the atk driver from asus and all that

 

I am also running Win7 64bit on mine.
I have also the intel chipset driver and ATK drivers installed.

I have all the latest drivers installed. I usually get all my drivers from: http://www.asustreiber.de/downloads

The owners of this forum work for ASUS support team in Germany and they always get the latest stuff.
Sometimes weeks before the time it is released on the official site.
For example the bios v212 was offered by them about a month before it was released on the ASUS support site.

 

Hi Turbo,
well I'm going to check that site. But I'm suspecting something's wrong on this lap, don't know if it's either the cpu . From what I said before , cause once I added as5 and twisted it and I think I scratched the die a little bit, and also one of the corners got chipped, broken but you can barely see it. But IT's working. Thing is I don't even know if it cause of this , temps go that high when on stress in orthos. Or if it happened before as well.
I did something stupid like bending the heatpipe , and don't know if this could have affected the thermal discipation of all the heat flow, so that It doesn't discipate anymore, cause heatpipes some have gases some other have fluids, maybe if I've bent it a little bit so that the copper plate did more contact on the cpu die, maybe the gas went out, but I don't think so.
Something else I did stupid was sanding ( I also lapped the heatsink , and I think I changed the level of the surface, I didn't get a mirror finish.. but better than b4 I used sandpaper going from 280 - 400 - 600 - 1200 -1500 ) the base of the screws where the heatsink plate goes screwed, first I did it with a dremel tool which was like some sort of a stone to sand metals, and I screwed it cause I left some of the bases out of level, then I built with a fingernail lime a square and could finally level all of them. bUt honestly this is driving me mad cause it can't actually be getting this far temp going to about 102C when in stress in orthos. Could the cpu be screwed when I scratched it by accident and one of the corners got chipped you can't even see it .. but well. .dunno.
Finally I bought a copper shim of about 1mm and placed it in between the copper plate and the cpu die , but temps are still the same, so I'm suspecting there's not enough pressure on the copper heatsink. how can I check there's enough pressure so both plates are touching.. there has to be some way.
Something else.. Do Atk drivers affect this ? some special flag on the cpu .? I mean voltage kept on 1.15 v. but I was using win7 32bits instead of 64
Thanks once more

 

Hello daaudio,
I also think this is no issue of some software, but rather a hardware issue.

It is most probably be due to the modifications you did with the heatsink are effecting the heat transfer from the CPU.
If the CPU is not heavily scratched it could be that it is not the reason, but the heatsink which you moded. I am not sure.

But due to moding, I think you have no chance with warranty even if your notebook is still covered.

In any case I am sending a link for ASUS shop where you find this original heat sink. In case you think of changing it, it costs 22.1 Euros.

http://www.asusparts.eu/index.php?cPath=67674_74174_131818_132321_132357