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Originally Posted by redpoint5
A recent media PC I built has a continuous draw of 110W at idle conditions, which is much greater than my 1995 PC. My gaming PC has a continuous draw of 400W.
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Though I'm not sure exactly what a "media PC" is supposed to do, I suspect the cause is your build choices, not necessity. That is, it would be quite possible to put together a machine of similar performance & cost that draws much less power. (See the earlier post about the SandyBridge notebook.) As for your gaming PC, I would suspect that a bit of attention to processor states in the graphics card(s) could reduce that draw considerably. Besides, you're comparing apples & oranges, since "gaming PC" is something that really didn't exist in the days of the P100.
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To be fair, electrical use has held fairly steady in the last 3 decades. I replaced a 36" TV that consumed 200W with a 60" plasma that consumes 200W.
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Again, that's down to your choice of technology. You could have purchased an LCD TV that offers much better picture quality (judging from my very limited experience, anyway) while consuming a fraction of the power.