Some bioses (bioii?) will tell you about consumption, if that's any help. The software package lm_sensors might be able to help you see what data is made available but YMMV as there is no widespread "standard" for access to power consumption data as far as I know.
Expensive servers have polished aps for acessing that sort of data.... ha! I googled "measuring pci card power consumption" and the first hit was "How We Measure Graphics Card Power Consumption ..." http://www.tomshardware.com/reviews/graphics-card-performance-benchmarks,3784-3.html Very sexeh setup. David david On Tue, Jan 6, 2015 at 2:18 AM, D. Hugh Redelmeier <[email protected]> wrote: > | From: Kevin Cozens <[email protected]> > > | Any spec for a video card as to power supply wattage would be a minimum. > > Not in my (limited) experience. I have bought cards that wanted to > specify how big my system's power supply was because the actual > required arithmetic is too hard for customers. They just guessed at > what the rest of my system would require and left a margin for error. > > The real specs are a little tricky in theory (I don't actually know > what things are like now). The power supply supplies various > voltages, each with its own current limit. Each voltage is provided > on one or more "rails", each with its own limit. But sometimes a > maximum draw on one reduces the limit on another rail. > > You need a power supply that has enough oomph on each rail. So you > want a requirement specified for each voltage. > > And generally you don't know how much power the rest of your system > uses in aggregate. > > Usually when you build your own system you buy more power supply > capactiy than you need. It doesn't cost too much more and you don't > really know what's needed. > > I imagine that common garden variety computers from big manufacturers > tend to size their power supplies with smaller margins. > --- > Talk Mailing List > [email protected] > http://gtalug.org/mailman/listinfo/talk >
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