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Old 06-11-03, 06:09 PM   #17
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Join Date: Apr 2003
Posts: 40

Originally posted by Skuzzy
They may run at Ultra speeds,..but they will not run that way long. Without some extreme cooling solutions, the heat will abruptly shorten the useful life of the chip.
Maybe, maybe not. Most designers target EM at 100-110degrees Celsius. Granted, thats junction temp, but you even with a 20 degree drop you're looking at 80-90deg C at the heat sink. Thats really $!@#$# hot.

The other thing to realize is its exponential with temperature - if you're 10 degrees less than the critical temperature, the device will have a long, long lifetime. Of course, 10 degrees over and you won't last long.

The bigger reliability danger is usually from overvolting the transistors, and to my knowledge you can't actually do that on a GF FX.
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