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What effect does lowering voltages have on wattages.

Stanners said:
I was reffering more to the incoming supply before it reaches the Psu :D (for those trying to save money on there electric bills)

On a side note Jokester, Have you ever been able to get earth leakage figures from a Psu manufacturer?
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Do those actually save you money? Not sure how much they cost in the first the place.

PSU manufacturers never give earth leakage values, I'm guessing because technically they shouldn't have any. I would imagine it's one of things that guy checks that does the proper load checks on PSUs.
 
No mate, it does not effect the power usage. it was more a question of interest. I work in electrical design and it is something i have never been able to get from any manufacturer. There is a fair bit of earth leakage from Psu's btw, it is something we have to take in to account when designing circuits!

We use a rough figure of 1mA per PC, but as most circuits are now designed for RCD's(Current IEE Regs) you are only supposed to allow for a quarter of the rated value for earth leakage i.e. 30mA RCD would give you around 7.5mA max allowance. which would only allow for 8 pc's per circuit.

Anyway going off topic..
 
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Big.Wayne said:
Did both chips use the same vCore while idle? . . . I guess not but not sure how that works then?

How about the difference in wattage between a stock 3.0GHz vCore under full load an the same chip at 4.5GHz under load?
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It was the same chip, both idle/load at 1.352V. It seemed pretty crazy but that's what Everest told me from reading the EPU chip on the mobo.

Also the same chip at 4.5GHz 1.352V used around 75W-80W under IBT. I don't recall running IBT and looking at the stock wattage though.
 
Undervolting only worth it if you are overclocking and are able to reduce the voltage to improve the life span of your cpu, provided its stable at the lower voltage lol. Also useful for laptop cpus to improve battery life and perhaps to cool them down a little bit but not really worth it in a desktop. Especially if you have humongous graphics cards sucking a lot of watts from your PSU lol.
 
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