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Comment: ATI Radeon cards (Score 1) 686

by pVoid (#15940876) Attached to: Computer Voodoo?
I have a radeon 9800, and only a 250W psu.

My computer works. But if I turn it off, and then turn it on again some time later, the POST screen never comes on. Either I get a blank screen or a screen with red text that says my ATI needs to be connected to a power source (hdd style power cable).

At first, I thought this was a connection issue. I would open the box, wiggle the board, wiggle the power cable. Switch the power cables... and after a certain mysterious combination, it would work. And no problems then on.

Then one day, I turned on my computer, and I had to do something. It just sat there with a black screen. I came back and restarted it and it just worked.

That is when I think I understood what the problem is: I say it must be a capacitor the doesn't fill up fast enough on initial boot that makes the card think that it's not connected to a power source. But if you leave it on for a few minutes to 'warm up', it just works. Of course, the fiddling around masked the fact that it was staying on for that crucial amount of time, and made me think that the voodoo was that.

It's still all conjecture, but yeah, that's my voodoo.

Chip Power Breakthrough Reported by Startup 174

Posted by ScuttleMonkey
from the processor-still-suit dept.
Carl Bialik from WSJ writes "The Wall Street Journal reports that a tiny Silicon Valley firm, Multigig, is proposing a novel way to synchronize the operations of computer chips, addressing power-consumption problems facing the semiconductor industry. From the article: 'John Wood, a British engineer who founded Multigig in 2000, devised an approach that involves sending electrical signals around square loop structures, said Haris Basit, Multigig's chief operating officer. The regular rotation works like the tick of a conventional clock, while most of the electrical power is recycled, he said. The technology can achieve 75% power savings over conventional clocking approaches, the company says.'"

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