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Real needed power for GPUs
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Topic: Real needed power for GPUs (Read 940 times)
Shevek
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Real needed power for GPUs
July 22, 2011, 04:21:59 PM
#1
I'm about to buy a 5770 (consumption ~108 W), but don't want to purchase a new PSU. Mine actually gives 350 W and works fine with 5570 (~43 W) overcloacked and "overhashed" to ~80 MH/s. I want new 5770 to substitute old 5570; so they won't be rigged together.
But all sellers advice me to upgrade my PSU up to 600 W if I want no risk of burning out.
So the question stands: do I really need to upgrade PSU? Or is it an oversized advice?
Proposals for improving bitcoin are like asses: everybody has one
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SheveK
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xurious
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Re: Real needed power for GPUs
July 22, 2011, 04:34:01 PM
#2
Which CPU are you running? How many hard drives, fans, etc.
Use this for a much more accurate power consumption configuration.
http://extreme.outervision.com/psucalculatorlite.jsp
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Re: Real needed power for GPUs
July 22, 2011, 04:35:20 PM
#3
It depends on the brand of power supply and efficiency as well as the rest of the components in the rig. I've run two 5770s off an Antec Earthwatts 80 plus certified 430w.
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Shevek
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Re: Real needed power for GPUs
July 22, 2011, 04:54:39 PM
#4
Quote from: xurious on July 22, 2011, 04:34:01 PM
Use this for a much more accurate power consumption configuration.
http://extreme.outervision.com/psucalculatorlite.jsp
Thanks for the link!
I have no precise data about my equipment now (I don't remember about 7200 rpm or 5400 rpm...) but with approx. data it yields 249 W for actual card and 299 W for 5770. So it's ok, with no big margin.
Anyway, when card is intensively used, the rest of hardware quiets a lot.
Proposals for improving bitcoin are like asses: everybody has one
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SheveK
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