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000 · 08-01-2002, 02:01 PM

Hmm well I've tried using alcohol for a little bit before, but since my evaporator is copper tubes with a bunch of aluminum fins, and my block is copper, I get the battery effect pretty easily.

And that experiment was with 1 gallon of of antifreeze 1 bottle of 91% alcohol and the rest water, so the antifreeze wasn't helping enough with the battery effect there.

But you may be right about the heat transfer. One problem though is why didn't the cpu get colder with colder water, even with poor heat transfer you'd think it'd still get colder right?

I did lap the block real good (although for some reason they say not to), so that should be ok. And I checked the mounting of it very carefully, had the motherboard completely out of the case and looked at it from all the sides, with a flashlight to check for gaps.

One thing I was thinking is that at lower speeds my processor was much closer to my water temps. So what this seems to say to me is that the heat isn't getting carried away fast enough. Although this is kinda weird since I have a 700 gph pump, I would think it's getting a pretty strong flow going through it but I think I'll check and see to make sure tonight.

08-01-2002, 02:01 PM	#3
000 Cooling Neophyte Join Date: Jul 2002 Location: TX Posts: 54	Hmm well I've tried using alcohol for a little bit before, but since my evaporator is copper tubes with a bunch of aluminum fins, and my block is copper, I get the battery effect pretty easily. And that experiment was with 1 gallon of of antifreeze 1 bottle of 91% alcohol and the rest water, so the antifreeze wasn't helping enough with the battery effect there. But you may be right about the heat transfer. One problem though is why didn't the cpu get colder with colder water, even with poor heat transfer you'd think it'd still get colder right? I did lap the block real good (although for some reason they say not to), so that should be ok. And I checked the mounting of it very carefully, had the motherboard completely out of the case and looked at it from all the sides, with a flashlight to check for gaps. One thing I was thinking is that at lower speeds my processor was much closer to my water temps. So what this seems to say to me is that the heat isn't getting carried away fast enough. Although this is kinda weird since I have a 700 gph pump, I would think it's getting a pretty strong flow going through it but I think I'll check and see to make sure tonight.