Removing IHS from a Prescott

[Hassan]

With the warmer temps coming from summer, I am having a harder time to maintain my Prescott overclock on water. It seems that when I could maintain my load temp to below 55C my Prescott Primes for 24+ hours, but if my temps get a few degrees above that Prime will crash. The main difference is the ambient temp in my room high 60's to low 70's F versus closer to 80 deg F now. I tested this my crankin my AC and it was stable again. The idea I have is one would think it is possible to lap the IHS off. Start with a really low grit to remove alot of material and sand it down to the core. Obviously as you got closer you would have to move up in grit so as not to go too far and remove the core. Has anyone ever tried anything like this or does anythink it might be possible. I would really like to keep my Prescott. I just found a 2.8 MO and it didn't even clock nearly as high as my Prescott.

[hallowen]

What's the product code on your Prescott?

[Çhrist0ph]

is this what you mean?

what are your temps now? (how many degrees cooler do you need it to run)

[Hassan]

exactly, except once you reached the core though there wouldn't be any ihs around it except at the outside of the chip itself, kinda like a shim. Once at that point i could pry that part off. I only need like 3-4C more so then I could keep my fans at 7 volts. The added benefit would be removing hotspots from the core itself, so even though my temps would still be in the low 50's under load I could possibly oc some more, maybe another 3-4 fsb.

It is an original SL79K C0, that overclocks to 3.8 on water.

http://home.comcast.net/~bestwestern/prescott.jpg

[Çhrist0ph]

does running your fan @ 12v cool it enough at the cost of noise?

[Perc]

i took the ich off my 2.4c MO stepping and the ich was glued/sodered to the core and i totaly trashed the core! the cpu went from my mail box to the trash can in less then 5 mins that day!! becareful thats all i have to say!!

peace perc,

[hallowen]

Right on,Perc

[Huhn]

u can still lap the ihs instead of removing it. think that will make more sense

[Çhrist0ph]

Originally posted by Huhn
u can still lap the ihs instead of removing it. think that will make more sense

sounds A LOT less risky too.

[bigZ]

the IHS on a Prescott is attached to the core isn't it, if I'm not mistaken??

[skate2snow]

I dont know if its secure for Prescot to remove it, but I know that it wont help you at all, even bust you...

[Hassan]

yes it is attached, which is why i would lap it down rather than pry it off. I've always removed the IHS's from my previous P4's including my 2.4c and 2.6c and noticed gains. all

[lalPOOO]

You could try, but you're deffinitly going to end up spending a least 2 hours or so sanding off that much material by hand. Even with 100 grit sandpaper. Thats not including the smoothing and finish and stuff. It'd be neat to mill it down, but considering that the IHS is epoxied onto the core its also a pretty dangerous solution as Perc said.

Sounds like a good idea if you have the perserverance to pull it off though.

[skate2snow]

Hassan: I know that on P4C it makes a difference, but I doubt it will on P4E coze of the heat, that is way more then P4C, and the smaller surface of disipation is not a good mix...

[Hassan]

whether it is small or not does not matter when you remove the ihs because right now it is small core heating up a ihs thru thermal compund which in turn passes heat to my water block thru thermal compound. So i do not understand that argument With it removed I am cooling the core directly.

[SPL15]

From what i've heard, the new way intel is attacthing the IHS is much more rugged and better thermal wise, but makes it near impossible to pry off like in the past.

Also, if the IHS IS in fact better than previous, how much gain do you expect when the IHS was doing a good job in the first place? no one knows these questions for a fact my man so be an innovator and maybe you'll start something new! I'm intersted in seeing what happens.

Also, how much gain did you notice with the 2.xC's with the IHS removed?