2 ms·
Not just "one" model of Cray-at least the Cray-1, XMP, C90, T916/932, T3E…were cooled by liquid HFCs. At five million+ $$ per system, the cost of using Fluorin
by linksnapzz 13y ago
Not just "one" model of Cray-at least the Cray-1, XMP, C90, T916/932, T3E…were cooled by liquid HFCs.
At five million+ $$ per system, the cost of using Fluorinert as opposed to mineral oil in the coolant cycle isn't even a rounding error.
If you spill mineral oil while swapping internal components, it's a trip & fire hazard. HFCs evaporate quickly, and aren't flammable.
- VLM 13y agoYou might be surprised at flourinert cost, when that was contemporary rather than ancient history I was looking into FC-40 and the like for some ham radio gear cooling (hey, why not?). Believe it or not, FC-40 retails today for about a kilobuck per 2-liter bottle. No I'm not kidding. So a couple thousand liter tank is about a megabuck. So its not a rounding error.
- qbrass 13y agoYou could have picked a Cray T94 full of it when it was for sale on Ebay. https://news.ycombinator.com/item?id=4560173 https://news.ycombinator.com/item?id=4560173