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canoli
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gtx 470 running hotter but why?

Tue Sep 03, 2013 10:15 am

I never kept a video card running this long before; always upgraded after a year or so. This 470 I bought new and it's been running for ~3 years now, never getting hotter than 65 no matter what. Now (the past few months) temps routinely hit 70, 75 - for instance when I run a browser flash app full screen (on 1 monitor, the 2nd monitor usually has Premiere Pro or Cinema 4D running).

everything's up to date - no OC - temps read from GPU-Z - huge case, clean, dust-free.

At first I thought it was a wonky driver from NV. But the next one (the current one) didn't change anything.

I can go into NV's control panel and turn up the fan and the temps will come back down...which is a clue I guess. But is "dying fan" a reasonable diagnosis?

Thanks for any thoughts you can share.
 
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Re: gtx 470 running hotter but why?

Tue Sep 03, 2013 10:32 am

Clean the heatsink. There's probably a good piece of velcro backing that's grown across the leading edge of the fins. If you can get it opened fairly easily, you may want to clean everything (wipe fan blades, etc), but at least run some canned air through the HSF backwards. A very small Wookiee usually comes out, often all in one piece.
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canoli
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Re: gtx 470 running hotter but why?

Tue Sep 03, 2013 10:54 am

that's the thing though I keep everything pretty clean...about 3 cans of air per month's worth. I haven't pulled the card in a long time so possibly there's some gunk hiding where the air-blasts can't reach it.

I'll pull the card and give it a real good clean, see if that makes a difference.

thanks for your reply F -
 
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Re: gtx 470 running hotter but why?

Tue Sep 03, 2013 11:03 am

canoli wrote:
that's the thing though I keep everything pretty clean...about 3 cans of air per month's worth. I haven't pulled the card in a long time so possibly there's some gunk hiding where the air-blasts can't reach it.

I'll pull the card and give it a real good clean, see if that makes a difference.

thanks for your reply F -


It may also be time to replace the TIM between the chip and heatsink. If you're going to give it a thorough cleaning, take the time to reapply new thermal paste of your choice.
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Re: gtx 470 running hotter but why?

Tue Sep 03, 2013 11:07 am

Three years is generally long enough that the thermal paste between the GPU and heatsink has probably dried out.
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canoli
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Re: gtx 470 running hotter but why?

Wed Sep 04, 2013 8:26 am

well the warranty is 3 years so that's sounds about right - replacing the TIM i mean. But am I'm worried for nothing? Google shows just about every 470 running way hotter than mine - folks routinely see 80s and 90C and here I am wondering about 72. But it's not the 72 it's the change - almost 3 years of steady 65C max to now suddenly 72, 75...I think I even hit 80 a few times.

But I'm going to change the TIM, and thanks for the recommendation you guys. You think AS-5 is alright? That's all I have on hand. Google "GPU TIM replacement" suggest AS-Ceramique is popular. There really isn't all that much difference is there in TIM? I don't have a ton of experience but I've replaced TIM on CPUs a handful of times, using whatever and I never noticed a difference - either it was applied correctly and worked or else it didn't.

Thanks again for your comments.
 
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Re: gtx 470 running hotter but why?

Wed Sep 04, 2013 8:53 am

Arctic Silver 5 should be A-OK. I'd guess it's probably at least as good as whatever was applied by the manufacturer. Best of luck with it!
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canoli
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Re: gtx 470 running hotter but why?

Wed Sep 04, 2013 9:14 am

more googling... all the recommendations for GPU TIM seem to be for a non-conductive, non-capacitive TIM. IC Diamond, MX-2, MX-4 from Artic also one of the ones from Shin-Etsu. I'm sure there's more. AS-5 supposedly is only slightly capacitive and should be okay too.

I guess if I'm doing it I might as well buy some new stuff - the AS-5 I have is pretty old at this point.
 
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Re: gtx 470 running hotter but why?

Wed Sep 04, 2013 9:15 am

What everyone else is saying. Once a year, i take my GPU apart and clean the heatsink and apply new paste, to avoid temp issues. In fact, I did this just yesterday after work.
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Re: gtx 470 running hotter but why?

Thu Sep 05, 2013 3:20 pm

IIRC IC Diamond is one of the few pastes that doesn't dry out long term. You might consider it for that reason.

Albeit I suspect you'll replace the card in the next one to two years. So perhaps moot discussion.
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Re: gtx 470 running hotter but why?

Tue Sep 10, 2013 10:24 pm

As others have stated may be time to clean and re apply the paste. My GTX470 idles are around 45-50C with the fan at 55-60 percent using EVGA precision software. With a GPU stress software it will climb but not too high, around 80 tops. Ambient air temp is around 60-70F though. Have you ever taken apart? Here is a youtube explantion
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