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To: tcmay who wrote (135135)	5/15/2001 4:27:26 PM
From: Joe NYC	Read Replies (2) \| Respond to of 186894

Tim, I think liquid cooling may make it in high performance machines very soon. I have this vision of a computer case that itself is used to radiate the heat, and a computer with no fans, just a pump, and the waterblocks attached to all heat-generating components - CPU, chipset, graphics card, power supply. The case could then be actually sealed. Joe

To: tcmay who wrote (135135)	5/15/2001 4:35:55 PM
From: Tony Viola	Read Replies (2) \| Respond to of 186894

Tim, >I'm surprised no vendor is making the jump to liquid cooling, especially for multiprocessor systems where each CPU is a high-watter. No, this _doesn't_ have to be water-cooling. Liquid flourocarbons, e.g., the Fluorinert variants like FC-77, are non-corrosive and can contact the CPUs and even the entire boards. (We used to do our thermal shock testing with Fluorinerts, made at that time by 3M, and even did some burn-in testing of running memory boards inside Fluorinert baths; these may even be standard by today for all I know of current practice.) One of the persistent arguments against liquid cooling is, what do you do in the event of a problem? How long does it take to bring the computer back to room temp, and what about thermal shock, anyway, lowering or raising between the extremes that kind of liquid brings. How do you keep the thermal shock from destroying the whole thing? In any event, except for onesy twosie special applications, you have to wonder if exotic cooling is worth it. Cray, the old CDC and some spinoffs of them have tried it but it never catches on. I think the increase in clock speed at room is pretty phenomenal anyway. Also, for one way and two way servers, the new blade packaging, which requires a low power CPU chip, is getting a lot of R&D funding. Then, there are the mid-tier and back end servers, which are still going with the fastest CPU chips around, like upcoming Foster. Welcome to the thread. Tony

To: tcmay who wrote (135135)	5/15/2001 4:40:54 PM
From: Dave Budde	Read Replies (1) \| Respond to of 186894

Tim, re: "finally got National Discount Broker to process my app and thus give me my SI "official Stocktalk posting privileges"" Hello, Tim. Good to see you are now posting. Are you planning to be at the shareholders meeting next week? Dave

To: tcmay who wrote (135135)	5/16/2001 1:39:44 PM
From: Paul Engel	Respond to of 186894

Tim - Re: "Tim May (finally got National Discount Broker to process my app and thus give me my SI "official Stocktalk posting privileges") " Welcome aboard - FINALLY ! Paul

To: tcmay who wrote (135135)	5/20/2001 8:08:03 PM
From: wily	Read Replies (1) \| Respond to of 186894

Hard/OCP reviewed a retail water-cooling system/case: hardocp.com $180+shipping, the radiator and pump are in the bottom of the case, the power supply is also cooled. Selling features are easy setup, quiet operation, quality built. Also, maybe someday? Magnetic nanocomposites exhibiting superparamagnetism were discovered at NIST to possess enhanced magnetocaloric effects, a finding which has opened up the possibility for magnetic refrigeration devices operating at much higher temperatures and at much lower magnetic fields than were previously possible. This year Dy-Al-Fe garnet nanocomposites were found to have enhanced magnetocaloric effects similar to those previously discovered in the Gd-Ga-Fe garnet nanocomposites. metallurgy.nist.gov