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Old April 21st, 2006, 02:42 PM
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Zalman CNPS7000B-Cu & removed IHS

Does anybody here have any experience on using a Zalman CNPS7000B on an Opteron/A64 with its heat spreader removed?

Do you need extra spacers to get a good contact, or is normal pressure enough?

I'm thinking the reduced pressure might actually help in protecting the core from being crushed, but I'm worried it might not make enough contact, or become instable.

Any experiences?
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Old April 21st, 2006, 06:55 PM
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I doubt very much that anybody has ever tried anything of the sort. Why did you remove the IHS? It's more beneficial to get a better HS than to do that, which brings me to another point: nobody has tried that because you only remove the IHS if you want to put a peltier between the core and a water cooler... You could try, but the IHS was there for a reason!
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Old April 21st, 2006, 07:17 PM
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I agree, this is something you would do to a Prescott, which generate loads of heat, and its benefitial to remove the IHS, but for an AMD, it really serves no purpose, and because of the risks of crushing/damaging the fragile core, its not worth it in my opinion
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Old April 22nd, 2006, 05:37 AM
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Haven't done it, was just curious.
Heard from several people that the thermal compound AMD uses for these chips is a bit crappy, and in some cases it makes bad contact, so was looking at my options.

Must say that for the 'Extreme cooling' forum, you guys are shocked pretty easy

Oh, and there are plenty of people who've done it, btw. Just google a bit. It's rather easy. They even discuss it on the AMD forums

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Old April 26th, 2006, 03:34 PM
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I know some people that have removed the IHS for watercooling setups, especially with the Swiftech Storm block (I may do it this summer) and have gotten much better temps. When it comes to air though I doubt you will see a drastic improvement.
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Old April 28th, 2006, 10:55 PM
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IMO, i'd much rather take off the IHS, apply AS ceramique or AS5, and glue it back on because i dislike crushing cores... ive even split one in half before. (it was an old thunderbird that was burnt to a crisp)

with that, you'd get the best of both worlds (sorta) : you get the IHS protection and you get a better thermal paste between IHS and CPU.
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Old October 10th, 2006, 01:12 PM
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what kind of glue should be used?
I removed my 144'S IHS some time ago and now it's going to my 2nd rig which uses air and not water...man i had some trouble with the temp..it always went up to 70° and then the pc went off...i use the stock air HS from AMD btw...since i had bad exp with UHU glue (it's quite sticky and dries fast but it hates heat and went useless in some time...so it's out of question...hehehe i have no other strong glue here 9 then i just picked off some left off rubber which was being cut off before when u remove the IHS...i though since it wasnt flatly cut the IHS wouldnt be (kinda) reattached so well...removed it and then i reattached the IHS without gluing it or whatever...i just rely on the stickiness of AS5 along with the nice pressure the AMD Stock HS gives to it to keep it from sliding...so far, @1.45v and 2430MHz (this crappy but good enough Biostar gf6100 cant hold high OC..but 2430MHz isnt bad...) it stays at 53°C...man with water it'd just like 40ish...but this is quite satisfying
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Old October 10th, 2006, 02:41 PM
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Zalman sell a two-component thermal glue. Works pretty good, used it for ram-heatsinks on my vid-card.
Some people just use AS5 mixed with a bit of superglue.
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mvagusta agrees!

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Old October 11th, 2006, 06:13 AM
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I've done it for my watercooling set up. Way I see it, if you are gonna spend the cash on watercooling - you can't then go leave the heatspreader on, kinda not doing a job properly and wasting your money.

I recommend it if you will take the risk...

As for a glue, I kind of did a mix of everything itsacon just said on my ramsinks.

I got some AS5, and some arctic silver glue. Mixed the glue up, and then mixed in some AS5.
Why? Better temps + I wanted to be able to take off the ramsinks without destroying the card. Arctic silver glue is bloody strong stuff, so it needs some mixing down with AS5 if you wanna be able to use it.

I wouldn't ever mix in superglue with AS5. Probably what they have done with the arctic silver gooop, but I would rather not take the rink on the temps. I purchased the ramsinks to help temps. Sticking a layer of superglue in between kinda seems daft...
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Old October 11th, 2006, 01:25 PM
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lol. tbh, ive had as5 alone do the sticking for me without anything else. but it only works upside down and right side up due to sucction. itll stick for good when as5 dries up sorta. but yeah. it wont work for large sums of weight and if the thing is vertical. lol. for those i just added some blue sticky tack on the sides. counterintuitive, but it worked for me. lol.
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Silvestre agrees: pretty much the same thing i do

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