CPU high temps in M570RU (Sager NP5791)

Hello everyone, my first post here.

I bought a Clevo M570RU, with a T7700, from a local reseller in Athens, Greece (" Turbo-X Dominus" in case anyone knows them).

My 8700m GT is running fairly cool.

The CPU, however, goes from 48 Celsius (118 F) all the way up to 87 (189 F) with orthos. It even goes up to 90 celcius with TAT, and triggers thermal throttling.

These temperatures are with the laptop running on a cooler and with the bottom cover removed! I have checked and reseated the heatsink, applied AS thinly and evenly, to no avail.

As an experiment, I ran a vacuum cleaner close to the heatsink plate (where killernotebooks have added more fins) and the temperature went down by 15 degrees celcius! Just with strong airflow around the plate which contacts the cpu.

This suggests that CPU contact is OK (i.e. not the problem suggested in another thread or the one where the protective film was left on at the assembly line).

I sent an email to Clevo regarding this, (local reselller is also looking into it), on Dec 12, but have not heard from them.

What do you guys think?

Thanks,
Costas

 

What about the CPU fan? Is it running? With temperature spikes that extreme (and the fact that putting airflow near the heatsink lowered the temperature so drastically), I would be looking at the fan before I checked anything else.

 

It is running, nice and loud. It is a very strong fan too. Fins are clean.

The detail here is that, the temperature was reduced drastically when I put the airflow near the heatsink's contact plate, not near the fins where the fan acts.

Thanks!

 

I hate suggesting disassembling the notebook so much, but you may want to remove the processor, clean both it and the heatsink, and apply new thermal paste, unless a contact pad was used. Sager generally uses thermal paste, but maybe there was a problem with the application of your thermal paste.

 

Done it, over and over. I have applied AS5 perfectly and thin, and I have cleaned both surfaces with the special AS solvents. The heatsink contact plate seems flat (any suggestions on how to confirm this, lacking a special tool?) screws were tightened in the correct order and progressively. I am fairly certain that contact is good.

Is everyone with an M570RU running lower CPU temps?

 

Anything over 70 and I would personally worry. My CPU when running WPrime for 5 minutes with not forcing full fans only hits 61C. I didn't know that you put some Artic Silver on your CPU. Did you do it correctly? Just a thought, not bashing you.

 

have you checked the heatsink to see if its sitting flat on the cpu die. i know i have fixed at least 2 of them that were not sitting correctly on there. also check the heatsink for the thin plastic sheet. i know you said you applied as already but worth one more look..

 

Checked all these things guys. Good points, but I am confident with what I have done. Even the AS5 trace looks nice and even if I remove the heatsink. I have actually improved on the temperatures, over stock, by 1-2 degrees with my application of arctic silver.

I should also mention that it is not a sensor issue. I have used HWmonitor, CoreTemp, Everest, and TAT. They all give the same readings.

zfactor, have you found that the contact plate was bent? It looks straight, but at a "microscopic" level there could be a problem. What ambient temp delta do you get with orthos?

Thanks everyone.

 

how about the vents, can you use a flashlight and use it to see through the vents?

If you do not see the other side, it could be dust clogs.

 

I think I have a possible explanation.

The fins at the vent may be the problem Gophn - but not because they are clogged!

There are three pieces to the heatsink (see the killernotebooks link above, for pictures): The contact plate, the tube, and the fins. Unlike the GPU heatsink, which works perfectly, the tube goes through the middle section of the fins structure, and it seems to be poorly welded - i.e., it is not touching all of the fins. Even where it touches, the welding does not look like copper. So it is a possiblity that the air flow is ineffective. I put some AS where the tube meets the fins and now orthos goes up to 81 Celcius (from 87)! TAT still takes it to 90 though.

 

More findings:

I put some plain stick-on aluminium RAM sinks on the contact plate. Eight degrees celcius drop with TAT. If I also run the vacuum cleaner close to these ram sinks, TAT drops to 60 (from 90+)!

Could the long copper tube be a heat pipe of some type, which is not working properly? Contaminated, or without any liquid in it?

This is an otherwise excellent and powerful laptop, well worth its money. I only wish Clevo would answer my emails on this problem. (I think it is very probable that others have the same overheating, without realizing it, since it is not severe enough to cause a shutdown).

 

I have the same note book and my HD runs idle at 54-55 and goes up to 60, I guess its the design of this laptop. Had I known this earlier I would def. not have purchased this.

 

Mine was overheating and shutting down until I sent it in and Clevo replaced a bad thermal sensor. I don't know if that means the problem was just false readings or some other effect.

 

I don't think it is a sensor problem in my case. The heatsink is so hot to the touch, that the CPU really should be at 80 degrees. Under load, you actually cannot touch the heatsink for more than half a second.

Are you sure they replaced only a sensor and not the whole heatsink?

Thanks.

 

yeah even with my moding the sink and making it sit flat mine still gets way to hot imo. temps are withing reason but a lot hotter than any other notebook i have seen with this same cpu.. imo maybe the cpu sink is just not capable of handling the heat these cpu's are putting out.

 

I am afraid this is the case. The link from the contact plate to the fins seems inadequate.

I have already sent three messages to Clevo at their site's service center emails :

[email protected]
[email protected]
[email protected]
[email protected]
[email protected]

No reply or acknowledgment, from any, after ten days.

 

Send the message to the retailer, Clevo doesn`t really do customer support the same way. Call them and tell them your lappy is overheating and you`re afraid something might go wrong. It`s under warranty so they have to fix it.

 

I have talked to them, describing the problem of heat and excessive fan noise and they plead ignorance.

Truth is, I haven't persisted all that much with them because I need use of a laptop and I would prefer to avoid taking it in for days. I believe the only thing they could do for me is to find a solution through Clevo. I will push them to do this, after I have a better understanding of the problem and I can guide them. In another situation or with a different product I would approach things differently - but I know it would have taken my reseller ages to find out, if ever, that with a few RAM sinks on the contact plate and a small fan blowing on them (my current setup) I would be running at 70 degrees under TAT (from 90+). As I am typing this, I am idling at 35 degrees in comparative silence

Talking to Clevo directly would save me time, since I believe this to be a design problem - proof being the vast improvement from my current makeshift modification. I am hoping that some engineer at Clevo will be more immediately convinced and will provide a more authoritative answer. I agree with you, however, on the principle that as a customer who has paid over €2000 I should be raising hell instead of banging on clevo's door, or playing with vacuum cleaners

 

I recommend to contact your vendor to swap for another unit, or replace the thermal cooler.

 

Gophn, I have contacted them. To determine if a swap would make sense, I told them to test with TAT on other laptops to see if mine is an isolated case or if it is a problem for all M570RU's. Since zfactor also sees high temps though, I think it is a design problem.

I will post with the results.

Thanks everyone.

 

I will try to post my temps and then we`ll see.
For the record, my HD goes from 45 to 53(that`s the max I saw) and the GPU from 43 to 57(crysis gaming and bitcomet downloading,connected to messenger,and IE with 8 tabs )

 

Just a quick update:

My local distributor is still waiting for an answer from their central service office. Preliminary tests with TAT, on another M570RU they sell with the same processor, caused the CPU to shut down.

 

Well, I just heard from my local reseller. Their service dept determined that the overheating I have described is an issue with all M570RU's they are selling!

They have contacted their Clevo supplier to see if anything can be done about the heatsinks.

If anyone with an M570RU is reading, could you please run the tests I described earlier, and post your temps? I would like to determine if this is inherent in the design, or if they got a bad batch of chassis here.

Thanks!

 

You're not alone dude, I hit 91 degrees Celsius with prime95 on the blend test within 2 minutes. I sorta got scared and just stopped the test. This is a brand new Sager NP5792 with MX-2 compound on the processor.

The funny thing is that the air that's blowing out of the back isn't really that hot. I would say that it feels like my compaq at 50 degrees celsius. In other words, the heat can't get to the fins?

 

This is exactly my situation. The air coming out is relatively cool, so it looks like the heat does not reach the fins at a sufficient rate.

I am glad it is not a "local batch" problem but, on the other hand, I am a bit concerned as to what can be done if this a problem for all M570RU's.

Thanks for the heads up man!

 

i bought my M570RU from RJTech and it overheats too! When i play crysis , the temps shoot up and the laptop start beeping..

 

I have never experienced anything like this. Post a link for that benchmark you want me to run, tell me what you use to check the temps and I`ll post my results asap...

 

about the only thing that gets really hot on my m571 is the hdd, sometime up to 57c! My gpu gets up to 60c OC'ed running crysis @1440x900, mixed high, VHigh. I contacted my reseller and they told me that I probably DL'ed a hardware driver from MS update (vista 32bit here) and that I should re-install ALL my drivers. I just reformated and my temps have come down drastically. But im still not sure what caused the change?

 

how do you reformat your comp? i am really a newbie ;( , my M570RU is dying , please...

 

Thanks eleron.

I have used orthos and TAT. Monitoring temps with HWmonitor and Everest.

 

Mortinator, if your CPU is overheating then I think it is extremely unlikely that reformatting and reinstalling windows will help.

Could you and naticus please run the same test as eleron911 to see what temperatures your CPU will reach?

Thanks guys.

 

Ok, I ran the test for 3mins, I didn`t want to leave it more that that...for the record at 2 mins it was at 75C , and at 3min it was at 80 as you can see from the screenshot. Tested with orthos.Man, never have I heard the cpu fan run that fast

Idle temps 1 min lates, 33/34

 

I ran the Prime95 for 10min, and T up to 70°C

 

Just try Orthos, that will heat things up

 

Thanks guys!

eleron, your results are lower, but close to mine considering that your CPU is running at 2200. My ambient temp was between 22 and 24 degrees celcius (72-75 F) - perhaps this has something to do with it as well. 80 degrees is still very hot I would say.

kaltmond's results on the other hand are much better. He was running two threads for prime95, so the test should be equivalent to orthos. And he is running a 45nm CPU which is rated at 44W as opposed to 34W for my T7700!

kaltmond what would you say you ambient temp was? Any chance of finding out your motherboard revision? It should be on a sticker close to one of the memory slots I think. Any chance of a photo of your heatsink? (lol, sorry to be asking for all this, please ignore as appropriate )

Still waiting to hear from my local reseller. I will post as soon as I have something from them.

Thanks again.

 

"Heat test" after 22min with ortos and atitool stress test:
RMmark:64c-65c
ATItool:74c-75c

So that mean its not that bad?

 

above 80 with AS5? heh .. i guess you wanted the best buy for a gaming laptop and here you go, overheating!

 

News from the local shop:

A new BIOS is on the way to them, which supposedly decreases CPU temps by 12 degrees celcius! They will test it before sending it to me.

I am sceptical and I will ask for what details they can provide on this. If a BIOS fixes temps then I can think of these explanations:

• The current BIOS reports temps too high - although I don't see how this could happen. I recall reading that Core 2 Duo's have the sensors analogue to digital converter onboard.
• The new BIOS will be throttling the CPU too early, or lowering voltage, or running a lower FSB, or a combination of these. I hope this is not the case, because the M570RU sells based on its performance.

If anyone sees another possibility please share it.

It should be interesting to try benchmarks before and after the update. Does anyone know how I can backup the current BIOS?

Thanks!

 

I just noticed, the date CPU-Z reports for my BIOS is 07/03/2007, which is earlier than kaltmonds 11/23/2007 (compare attached image to kaltmond's attachment). Looks like the BIOS does have something to do with the low temps kaltmond got?

 

Just run orthos for 5min. For me the Temp is still ok. Maybe i´ll try to do a little modification later.

 

Well, yea, Kaltmond`s results are better. But still, I fail to see where a stress test that gets the system at about 80-90 C means that the CPU is overheating. In real life my temps NEVER go above 60 C for the CPU, if they even get that far...
I`ll have to run Wprime myself and see how it goes.


As for idle temps,as I said, 30ish ... and it got to those temps in about 1 min right after the orthos test...seems that cooling worked just fine. It`s not like you`re going to find a game that pushes that much heat out of the CPU anyway

 

Point taken eleron, but around here it gets really hot in the summer.

 

The thread on the NP5792 / NP5793 Update has a photo of a new heatsink for the 45nm processors. The pipe to the fins is larger.

 

HI! My result are better - 72 C!, but I have problem with resolution, it's too muddy under 1920x1800 pix! Then, battery meter just showing up "Unknown remaining"! Any help? Sorry, my english isn't really good )
__________________________________
M570RU 17 " Intel Core Duo 2 1.80GHZ
800MHz L2 2048KB GeForce 8700M GT 512 MB
2GB RAM 240GB HDD

 

Too bad that they won't send it to you unless you RMA your whole laptop. I don't think it's worth the time and money to ship to them just to get a new heatsink on.

 

I got my new M570RU today with a T9300 45nm processor. I was told by the reseller it should be the new improved heatsink, but it had the old heatsink. After checking the pictures again on Justin's thread, it says boldly "Extreme Edition" across the bottom. Perhaps these new heatsinks and cases are for X processors only.

I'm still pretty deep in installing drivers etc, but I'll run heat testing soon before I decide whether to return it.

 

so wait you have the extreme edition bottom but the old heatsink??

 

No, the old both. I was told by my seller I would get the new improved heatsink and case.

 

Just a quick note to let you guys know that, in the end, my local Clevo reseller replaced the M570RU chassis with a new M570RU-U (the new version with the larger heatsink).

The maximum temp with TAT is now 71 degrees celcius (from 90+), with the same ambient temperature. A few ramsinks and a third fan bring it down to 61 degrees!


Thanks everybody for your contributions and advice.