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Old 12-21-11, 06:11 PM   #152
Join Date: Jul 2003
Posts: 1,719
Default Re: ATi 7000 series delayed till Q1 2012

Originally Posted by Roadhog View Post
Logic... Isn't your strong point is it...

How long do you think it will take you to make up the money spent on a new gpu in power savings?

Lets say that the 7870 costs $300, and uses 150 watts under 100% load.

The price of your current 5870 doesn't matter, but lets say it draws 250 watts under 100% load. That's 100 watts more than your 7870.

Now, if you were to have the GPU under 100% load, 24 hours a day, with a cost per kwh of an insanely high $0.20/kwh, it would cost you $1.2 a day, or $36 a month to run your 5870. Compare that to the 7870 at 150 watts, 100% load, it would cost you $0.72 a day, or $21.6 a month. That is an amazing savings of $14.4 a month. To break even on the 7870 cost, it would take you 20.8 months.

That is just the worst case scenario. If you drop the cost of the kwh to a much more reasonable $0.10/kwh, you are looking at 41.6 months to break even. As you can imagine, since you don't run your GPU 24/7 that it will take you much longer than 41 months to break even.
Hey! We agree on something Roadie. I'm always bewildered when someone mentions electricity savings as a factor as well.

I offered to sell a coworker a 50" 720P plasma the other day for $250, and he replies "Don't those use a lot of electricity?!" and doesn't buy it. Meanwhile he watches his old style tube tv with a much smaller picture and probably close to the same juice used.

Electricity is way too cheap here to be a factor on anything unless you're literally watching every nickel- in which case you should be gaming on a Nintendo DS, not a computer.
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