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[Official Guide] Modifying/Removing NVidia GPU Heat Spreader/IHS - Page 7

post #61 of 257
Quote:
Originally Posted by IrishV8;15597113 
Instead of soldering it why not just cut out an xact hole in the heat spreader and sand it down till it is completely flat and level and that way you on need one layer of TIM.

That would be the same thing as removing the IHS altogether and mounting the cooler base straight to the core. Which is what you would do if you have a cooler with a flat base.

Point of the IHS is to spread the heat so if you have a direct touch cooler like Cakewalk's DirectCU, the heatpipes have good contact.
Quote:
Originally Posted by IrishV8;15597237 
Hmmm I am almost curious to tear open my old 9800gt and play with it.

9800GT doesn't have an IHS, the core is exposed. Only Nvidia cards that have the IHS are G80 8800GTS/GTX/Ultra, GTX200, GTX400, GTX500. Basically GTX and higher has IHS, GTS and lower no IHS.
Edited by qiqi1021 - 11/6/11 at 7:11pm
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post #62 of 257
well i gotta take it apart and sand it some more, with oem paste i would fold at 63c, with noctua tim i would fold at 68c, and right now im at 75c and rising...
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post #63 of 257
then tearing apart my 560 ti when i upgrade and will test
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post #64 of 257
Thread Starter 
Yea Keyan, Keep sanding! I went through like 3 pieces of 400grit paper...and then washed those off and used them again like 2 more times. Basically what I was looking for was when I put the IHS back on the chip that you could see through the two pieces, between the IHS and the silicon base. Idealy, the IHS only making contact with the chip and not the edges on the base. So keep sanding and try that. Did you lap the inside of the IHS?

Glad people are having good results with this! Unfortunately, for the risk involved with this mod, it probably won't be long till I hear about someone ruining their gfx card...I know it'll happen here eventually...

Whats good though is hopefully when everyone that's trying this gets it right, we can start a database of people and their before and after temps, proving that it works really well!

Keyan, for the volts I'm running, I went from 75C before, to 60C after....So I would expect a similar result if your case temp is around 20-23C
post #65 of 257
Quote:
Originally Posted by Cakewalk_S;15597834 
Yea Keyan, Keep sanding! I went through like 3 pieces of 400grit paper...and then washed those off and used them again like 2 more times. Basically what I was looking for was when I put the IHS back on the chip that you could see through the two pieces, between the IHS and the silicon base. Idealy, the IHS only making contact with the chip and not the edges on the base. So keep sanding and try that. Did you lap the inside of the IHS?

Glad people are having good results with this! Unfortunately, for the risk involved with this mod, it probably won't be long till I hear about someone ruining their gfx card...I know it'll happen here eventually...

Whats good though is hopefully when everyone that's trying this gets it right, we can start a database of people and their before and after temps, proving that it works really well!

Keyan, for the volts I'm running, I went from 75C before, to 60C after....So I would expect a similar result if your case temp is around 20-23C

well, here's another OCCT 3.0 readings i've done tonight for 10 mins. I think the graph is looking better and it seems that for the moment i don't need to do sanding of IHS? OCCT and MSI AB graph are almost consistent. What do you think Cakewalk_S? biggrin.gif i'm on 960 at 1050 i'll try 1000 tonight and see what max temps.

thanks
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post #66 of 257
Thread Starter 
Yea man. Looks pretty good.

Basically how I figured I was done is when I was happy with my temps. As you see the temp difference with mine went from 76C to 57C...so that 19C drop is quite insane of an improvement. I think I also got a good 5C drop from swaping out that new fan, so maybe a more realistic figure would be at least a 10C drop...

Whats your before and after temps?
My chip tops @ 990MHz @ 1.087V. OCCT errors @ 1000MHz & driver crash in Heaven 2.5.

I'm 950MHz @ 1.050V 24/7. Rock solid temps. Not even hitting 50C in BF3 right now...
post #67 of 257
Well done! +1 rep

I see im gonna have to do that to mine now: http://www.overclock.net/nvidia-cooling/1140299-gtx-480-sli-antec-620s-mod.html#post15282885
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post #68 of 257
URL=http://www.overclock.net/image/id/943210/width/600/height/369]369[/URL]
Quote:
Originally Posted by Cakewalk_S View Post

Yea man. Looks pretty good.
Basically how I figured I was done is when I was happy with my temps. As you see the temp difference with mine went from 76C to 57C...so that 19C drop is quite insane of an improvement. I think I also got a good 5C drop from swaping out that new fan, so maybe a more realistic figure would be at least a 10C drop...
Whats your before and after temps?
My chip tops @ 990MHz @ 1.087V. OCCT errors @ 1000MHz & driver crash in Heaven 2.5.
I'm 950MHz @ 1.050V 24/7. Rock solid temps. Not even hitting 50C in BF3 right now...

Hi,

here is another OCCT 3.0 test diagram an hour after resanding and re installing my GPU IHS. The graph on the left are the result of my first IHS lapping through which the graph curve is identical on GPU 1 and GPU 2 but different values in both min and max temps and on the right was the graph of test taken today which is looking weird? I've never lapped my 2nd card but you can see the graph after 1 minute idle test , it stay perfectly level while my 1st card only reached a max temp temp of 52C compared to the previous test result of 58C and minimum temperature difference is 4C deg on test start up (red and blue arrow) I'll be re testing after 72hours to see if the TIM (Artic MX4) fully cured. BTW I'm on water cooling and currently at 1000Mhz / 2000Mhz / 2500Mhz @ 1100mV with ambient temps on my place is around 23C. :specool OCCT 3.0 Nov. 8 and Nov 14, 2011.pdf 393k .pdf file
Edited by znarf - 11/14/11 at 4:00am
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post #69 of 257
Thread Starter 
Your second test probably had something running in the background that doesn't allow OCCT to get an accurate reading, thus the weird graph. If you have HWmonitor running it'll skew your charts like GPU 2 on the 2nd one.

Give that a try. Maybe try OCCT 4.0....?
post #70 of 257
383
Quote:
Originally Posted by Cakewalk_S View Post

Your second test probably had something running in the background that doesn't allow OCCT to get an accurate reading, thus the weird graph. If you have HWmonitor running it'll skew your charts like GPU 2 on the 2nd one.
Give that a try. Maybe try OCCT 4.0....?

Hi Cakewalk_S

just tried testing again with HW and MSIAB disabled and also tried two types of resolution, the graph on the left side was run with error check at 1024 x 768 res and on the right with no error check at 1920 x1080 res. I think the graph on both test for GPU1 and GPU2 are getting consistent and most important are the max temps which is below 60C on both test thumb.gif and happier of the results. Again thanks for your awesome guide really appreciate that you've posted it great help for me. biggrin.gif

cheers:drink: OCCT Graph.png 480k .png file
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