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AS5 on MSI r7950

post #1 of 14
Thread Starter 
Hello Overclockers,

I recently done some new thermal paste on my GPU, aka MSI r7950,
I did some Arctic Silver 5 on em,

And i think its pretty high?
I just did it on a sec ago and i am kinda dissapointed,

Room temprature is somewhere 20 celcius,

Idle: 44-45 celcius,

At load its 69-70 celcius (With kombustor from MSI afterburner)

I gotta say that it is consistant, It isnt like wiggling at a few numbers,
But arent these pretty high numbers?

Well the load is still pretty good-well enough in my opinion,
But the idle, Isnt that pretty hot?

Anyhow,

I hope you can tell me more,
I used the pe method , just a small thing, i did the GPU together, did it all apart again, Looked if it was enough/ not to fat, did the thermalpaste back from it and did the same again on it since it looked alright and spreaded nicely.

And yes i do use alchohol to clean it 90-98 procent if i remember correctly.


Thanks for your time.

Best regards,
DrLuigi.
Edited by DrLuigi - 11/13/12 at 12:12pm
post #2 of 14
Thread Starter 
Or is this thermalpaste more for CPUs then GPUs?
Since i thought it did not matter realy,

And i heard about a Burn in time, Is that true or?
post #3 of 14
Is your card downclocking properly when idle? Sometimes these cards idle @ higher core / memory states b/c of driver issues.
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post #4 of 14
Do not put AS5 on GPUs

Edit:
AMD does not recommend any capacitive thermal paste. AS5 contains silver and if it makes contact with the traces and other parts of the GPU PCB can cause shorts which will not be covered under warranty. I think Shin-etsu was one of the few recommended for use.

That being said, it works fine. Sometimes you need to spread it to ensure good contact, and in some cases you need a thick layer. AS5 also has a 200 hour burn in time.
Quote:
Due to the unique shape and sizes of the particles in Arctic Silver 5's conductive matrix, it will take a up to 200 hours and several thermal cycles to achieve maximum particle to particle thermal conduction and for the heatsink to CPU interface to reach maximum conductivity. (This period will be longer in a system without a fan on the heatsink or with a low speed fan on the heatsink.) On systems measuring actual internal core temperatures via the CPU's internal diode, the measured temperature will often drop 2C to 5C over this "break-in" period. This break-in will occur during the normal use of the computer as long as the computer is turned off from time to time and the interface is allowed to cool to room temperature. Once the break-in is complete, the computer can be left on if desired.

As you can see, the burn in doesn't make a big difference. Your temps don't look terrible to me, I would be more inclined to think it a case airflow issue rather than the GPU. Were those temps with an open setting like a test bench?
Edited by Senator - 11/13/12 at 12:36pm
    
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post #5 of 14
Thread Starter 
Quote:
Originally Posted by Senator View Post

Do not put AS5 on GPUs
Edit:
AMD does not recommend any capacitive thermal paste. AS5 contains silver and if it makes contact with the traces and other parts of the GPU PCB can cause shorts which will not be covered under warranty. I think Shin-etsu was one of the few recommended for use.
That being said, it works fine. Sometimes you need to spread it to ensure good contact, and in some cases you need a thick layer. AS5 also has a 200 hour burn in time.
As you can see, the burn in doesn't make a big difference. Your temps don't look terrible to me, I would be more inclined to think it a case airflow issue rather than the GPU. Were those temps with an open setting like a test bench?

They were made in my HAF X case that is pretty well when talking about airflow,
Still the stock fans but i would upgrade em soon, But even tho it should have enough airflow.


It isnt terrible, But it looks like it isnt great temps either imo ? or am i wrong,

Well i heard spreading makes bubbles. I just did a size pe on it, press it on, screw it in, do it back open, look if it was spreaded good, and not over the PCB, and it was all fine,

The PCB looks kinda like this:
http://www.google.be/imgres?um=1&hl=nl&sa=X&biw=2133&bih=1061&tbm=isch&tbnid=PZwOsPrd58EvMM:&imgrefurl=http://www.guru3d.com/articles_pages/msi_radeon_hd_7970_lightning_review,5.html&docid=QihnYMkOo5dO0M&imgurl=http://www.guru3d.com/miraserver/images/news/2012///msi-4352-Untitled-4.jpg&w=700&h=368&ei=MrOiUOe-Dei20QWWnoFg&zoom=1&iact=hc&vpx=189&vpy=399&dur=361&hovh=163&hovw=310&tx=191&ty=75&sig=103609457737124301690&page=2&tbnh=131&tbnw=248&start=53&ndsp=64&ved=1t:429,r:69,s:20,i:335

Or as you can see here at 2.55 http://www.youtube.com/watch?v=jExfK6_zZRU

So it is kinda protected to get like a lump of thermal on the pcb to get shorted out or something.

Quote:
Originally Posted by spinejam View Post

Is your card downclocking properly when idle? Sometimes these cards idle @ higher core / memory states b/c of driver issues.

I think so ye,
http://puu.sh/1pSs3 (This was made while browsing, But when just letting the PC stay for 5-10 min alone its also 43-44)
Well 45 celcius is decent, But i realy expected better from as5 that is seen of one of the better thermal compounds out there,
and 69-70 load is also decent but yet again, i expected better kinda, idle is i think maybe even worse then stock thermal?
load is the same i think, or even less then at stock, Idk anymore.
---
Edit:
If you look at most reviews the Load temprature is very good,
But the Idle is at most reviews a bit too much. Weird.
Edited by DrLuigi - 11/13/12 at 1:09pm
post #6 of 14
Thread Starter 
Hey

Small update here,

When i look at reviews like this:
http://www.bit-tech.net/hardware/2012/08/16/amd-radeon-hd-7950-3gb-with-boost/7

The Load temprature is very good (Mine delta for load is aprox 49 (69c - 20 ambient))

But the Idle Meh..
44-20= 24

Well of course they probably used a bench, But still, I have a hafx, It should have almost the same airflow, with the sidefan etc..


Thanks everyone for the help smile.gif
post #7 of 14
Glad this thread came up. I was thinking of doing the same on my card, but I have some Arctic Ceramique laying around instead I plan to use.

Curious on what difference in temps in will make for me.
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post #8 of 14
Thread Starter 
Oh, Maybe its due i have a dual monitor setup, Gonna set my multi monitor off for a bit and see if its any better the idle temps.
I saw a website where it shows that it has diffrent profiles, at multi monitor its 500mhz instead of 300 at desktop.
post #9 of 14
500 Mhz core is not a full downclock. It's still an elevated power-state and that's why your temps @ idle are so high. You need to express uninstall all AMD drivers and full uninstall MSI AB. Reinstall AMD drivers and AMD CAPs > restart > reinstall MSI AB > apply -xcl hack to shortcut > restart. That should solve your problems -- you'll idle in the 30's. thumb.gif

--- ahhhh multi-monitor -- that explains it. smile.gif
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post #10 of 14
I have AS5 on both my 7950's and temps went down about 6C for both. The multimonitor setup is keeping your clocks high which in turn keeps temps up. I wouldn't stress 40's C come on body temp is 37C
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