Removing IHS **AGAIN**

pmanipole · Post by **pmanipole** » Tue Feb 28, 2006 2:33 pm

i would be real afraid of crushing the core.

do you use any spacers

Post by **FZ1** » Tue Feb 28, 2006 3:06 pm

kenc51 wrote:You need a heatsink which bolts on, otherwise there would be a gap between the hsf and the core......think of the old athlon xp cpu's!!!

I'll be doing mine this week :p

Yep, one is water cooled and the other uses a Zalman 9500...no spacers.

wuzy · Post by **wuzy** » Wed Mar 01, 2006 6:51 am

bigblockmatt, it's the exact same logic why people take off the shim on GPU/VPU.

Other than flatter surface as others have mentioned, the IHS doesn't spread the heat as well as if you have a well designed copper base HSF.

It's all about getting the heat our of the core as fast as possible. The more directly a cooling device can get to the core, the better the cooling.

bigblockmatt · Post by **bigblockmatt** » Wed Mar 01, 2006 12:50 pm

i see...makes sense now. what is the shim on gpu? is that the weird ring thing?

wuzy · Post by **wuzy** » Wed Mar 01, 2006 3:35 pm

Some random picture I grabbed off Driverhaaven to show the shim on 7800GTX. Just another one of those annoying stuff that lowers cooling for the sake of safety which enthusiasts don't care about.

bigblockmatt · Post by **bigblockmatt** » Wed Mar 01, 2006 4:54 pm

got ya, thats what i thought it was. i remeber that from when i put aftermarket coolers on my radeon 9700 and x850. how hard is it to take the thing off? what should i look out for? think i will play around with that on my 9700...maybe...

wuzy · Post by **wuzy** » Wed Mar 01, 2006 6:27 pm

bigblockmatt wrote:got ya, thats what i thought it was. i remeber that from when i put aftermarket coolers on my radeon 9700 and x850. how hard is it to take the thing off? what should i look out for? think i will play around with that on my 9700...maybe...

I've seen countless people damaging their X8x0s and 7800s because their blade scratched against the chip packaging which contains wire traces.

When I removed my shim off the R350 it was faily simply, you just need to a thin blade to slit in while keeping the blade edge pointing upward against the shim. Once the gap has been created you can then use any thin non-sharp edge stuff to lift/peel the shim off.
I like the new dental floss idea people are talking about here tho.

The process(and risks) are extremly similar to lifting the IHS off discussed in this thread.

pmanipole · Post by **pmanipole** » Mon Mar 06, 2006 10:44 am

i took the shim off of my 9700pro when i watercooled it and the temps dropped a extra 8c from when the shim was on.

i dont have the guts to do it to my 7800gt, plus my temps are running 43c idle and 49c full load.

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Removing IHS AGAIN