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Mobility 5870 too HOT!?

post #1 of 15
Thread Starter 
Hello everyone,

Wow I haven't posted on these forums in like 3 years now. Wife and baby and next thing I knew computer hardware was a distant memory. In fact the build in my sig is still my current desktop, and it pretty much never gets used...

At any rate, I did however recently pick up a pretty nice gaming laptop for a pretty sweet price. Unfortunately, I am having a bit of a problem with the GPU. It isn't an overclocking issue, but I did so enjoy these forums in the past and I figure if anyone will have a good answer it will be here...

SO, the laptop is an MSI GX740-434us. i5-460m, 4GB DDR3, Mobility 5870.

The videocard runs HOT! Googling around the net you will find tons of posts regarding heat issues with this specific MSI model. Sadly, most of them are in regards to an idle frequency issue fixed in a later VBIOS from MSI. I AM flashed to most current MSI releases of not only VBIOS, but also BIOS and EC Firmware. The card DOES idle at a lower frequency (405 compared to 700 max stock) and the fan DOES ramp up properly under load (30% idle to 100% full load).

*all the temps I'm reporting below are verified through GPU-Z, ATI CCC, MSI Afterburner AND HW Monitor...they are all showing the same readings*

The card idles around 60 C, but under Furmark it jumped above 100 C in about 2 minutes. Same results from ~5-10 mins playing Metro 2033. After being unable to fix this issue, and with the knowledge that my product is under MSI warranty, I finally decided to just push the card and see what happened...

It turns out the temps do level out around 105-108 C, never going any higher even after letting Furmark roll for an hour or gaming for a few hours.

I know everyone is probably freaking out reading that temperature, BUT the thing about it is the exhaust is never more than warm to the touch, there is never any artifacting, stuttering, shutdown, blue screen or any other signs of overheating.

At this point I am leaning towards the idea of a bad temp sensor. I am just looking for feedback from you all to see what others think about the issue. It seems to me there's no way it could be actually running for that long at 108 C...wouldn't it be frying after just a little while at that temperature? Or maybe it really can withstand this temporarily, and I'll find it dieing in the near future. I've only stressed it like this for a day or 2 at this point, so I really don't know. I can't seem to find any official max temp specs for ATI cards...

Also might be worth mentioning, the CPU hit max of 86 C on Core 1, well below the TJunction listed on Intel's site of 105 C. I do believe they share a pipe, so if 1 was overheating shouldn't I expect temps in general within the case to be pretty high?

I have considered taking her apart and re-applying the thermal paste on GPU. I have some AS5 lying around still, if that stuff keeps well over long periods of time...Really though I'd probably just RMA and let them fix it, no need to void the warranty.

So anyway, what do you all think?? Sorry for the long post, and thanks in advance for reading/replying,
Edited by gandalf615 - 10/3/11 at 12:06pm
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post #2 of 15
At 90-100°C ? should trigger the core/memory throttling down. If you haven't noticed it, it could be driver related issue. The temp should tell the driver with BIOS check to lower the opertaing frequency to prevent damage from heat. One thing I would do is to update to latest CCC mobility driver. If it doesn't change anything and not voiding the warranty, I would take it apart if furball curled up HS. I could be wrong about the mobility GPU safe operating temperature, but fail to see how it could be in higher range than a discrete GPU with better cooler. I would give MSI Tech Support a call.
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post #3 of 15
Happened on my mom's G73. You need to reapply the thermal paste on the GPU. It's a PITA of a job, but it's necessary.
post #4 of 15
The fan could get clogged up and may need to be cleaned. Also like Phae said change Thermal Paste.
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post #5 of 15
Thread Starter 
Thank you for the replies,

Would love to clean it up and repaste myself, but this will void the warranty. As much as I hate the idea, it is probably the smarter thing to just RMA and let MSI handle it...

Does anyone have experience with approximately how much heat this card can take though?

I ran an hour of ATITool last night with 0 signs of stress, reporting 108 C practically the whole time. That's why I'm saying the temp seems almost unbelievable.
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post #6 of 15
It will shut down around 110-115C, but anything north of 100C can cause cumulative damage.
post #7 of 15
rma wont do anything to help msi's tim application technique
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post #8 of 15
Thread Starter 
Quote:
Originally Posted by ZealotKi11er View Post
The fan could get clogged up and may need to be cleaned. Also like Phae said change Thermal Paste.
So I just called MSI and they confirmed I am ok to remove the top warranty sticker since the RAM is within that bay. The guy also said its a possibility there either won't be inner stickers or the ones there are will not obstruct me from repasting the GPU.

Couple of questions...

1. Does anyone know if my like 3-year-old AS5 paste is still good to use?

2. Does anyone have advice on how to do the paste for this GPU? I've done plenty of CPUs, and I remember different tactics for dual-core (thin line across both cores) and quad-core (4 dots, 1 on each core), but I've never done it for a GPU so any advice would be greatly appreciated!

Thanks everyone,
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post #9 of 15
1. 3 years should be not a problem as long as they are not dried. Never used AS5 but from what I read around here the non ceramic is capacitive and not recommended. May cause damage if spread outside GPU die and touching the legs other component around. Get MX-3 or MX-4, they drop the temp around 2-4C every new GPU I replaced it with.

2. Spread it thinly or put a small blob in the middle then check for contact surface. I always spread it thinly with a credit card.
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post #10 of 15
Thread Starter 
Quote:
Originally Posted by Ken1649 View Post
1. 3 years should be not a problem as long as they are not dried. Never used AS5 but from what I read around here the non ceramic is capacitive and not recommended. May cause damage if spread outside GPU die and touching the legs other component around. Get MX-3 or MX-4, they drop the temp around 2-4C every new GPU I replaced it with.

2. Spread it thinly or put a small blob in the middle then check for contact surface. I always spread it thinly with a credit card.
Well an update. I repasted the GPU last night. Sadly, temps are even worse. Load temps are the same, but that's because at 108 the GPU throttles itself and so its constantly switching between 700/405 core clock to keep from getting any hotter. Idle temp, however, increased by almost 10 C.

The factory had definitely spread the paste on very thickly, it was caked up and overflowed all around the sides of the die. Seeing that, I thought for sure this repaste would fix the problem.

I spread it thinly across the entirety of the die, seemed good. I was using old thermal paste however, because the new stuff my buddy had was metal-based and I wanted something non-conductive. So it was an old bottle of this stuff: http://www.newegg.com/Product/Produc...scrollFullInfo

Needless to say, very disheartened by this result. I guess it could be bad paste...that or maybe the heatsink isn't tight enough to make really good contact?

I ordered a tube of MX-4 off Newegg and I'll try again, hopefully this weekend. At least I'm warrantied, so RMA is still available to me if I don't find any benefit from another repaste.

Anyone have advice for me going into this next attempt?
Edited by gandalf615 - 10/5/11 at 6:55am
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