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metro.:
I see your feet.
kitamesume:
--- Quote from: duelistgamer on January 13, 2013, 05:17:12 AM ---PSUs tend to lose their power capacity right?
Also, there is no reason to buy a PSU that is just enough for a pair of 580s and a 560 Ti. I checked my power draw- it is almost 1000W according to my UPS. And I also overclock my system. The processor is an i7 960 clocked at 4.14Ghz.
I did consult with a few friends before choosing this over an HX1050 :)
--- End quote ---
is there any proof for that though? now a days it rarely happens on real power supplies, well at least no one says their real powersupplies does so.
580s and a 560 Ti - ok now it made sense, its just about right, thats a triple card >,>
Klakket:
duelistgamer:
--- Quote from: kitamesume on January 13, 2013, 06:44:42 AM ---
--- Quote from: duelistgamer on January 13, 2013, 05:17:12 AM ---PSUs tend to lose their power capacity right?
Also, there is no reason to buy a PSU that is just enough for a pair of 580s and a 560 Ti. I checked my power draw- it is almost 1000W according to my UPS. And I also overclock my system. The processor is an i7 960 clocked at 4.14Ghz.
I did consult with a few friends before choosing this over an HX1050 :)
--- End quote ---
is there any proof for that though? now a days it rarely happens on real power supplies, well at least no one says their real powersupplies does so.
580s and a 560 Ti - ok now it made sense, its just about right, thats a triple card >,>
--- End quote ---
I don't have proof unfortunately. Last I remember, the UPS stated 972W. Note that I'm referring to wall draw and not system draw :) the math should be easy enough. But I cant take pictures now. I'd have to download Metro 2033, which I finished almost 1.5 years ago, again. Also, I ended up sending the UPS for warranty because of a faulty fan sensor. Even MSI kombustor did not reach those levels, probably because of the OCP that nvidia added to the Fermi line.
Nowadays I generally do not reach my peak power draw because the games I'm currently playing do not use so much power. Besides, my exams and anime are taking up too much of my time for games lol.
kitamesume:
you lost me there, UPS meaning the one with a battery backup?
wall-draw can vary depending on load, you should've compared it with system-draw:wall-draw as a ratio from before vs after.
if the system-draw is the same while wall-draw dropped... well thats weird since your PSU suddenly became more efficient! thats a good thing by the way.
but if the system-draw dropped while wall-draw is the same, or system-draw is the same but wall-draw increased should mean that efficiency decreased.
as for powersupply max capacity declining, you can only monitor that if your PSU puts out a magic smoke when you near the declined capacity, or simply became unstable (BSOD or crash) when you near the declined capacity.
e.g. before PSU=1300watts, system-draw=1000watts. now PSU=900watts, system crashes at system-draw=901watts.
edit: this scenario is far from being common, if you ask about capacitor aging from an EE or ECE, capacitor aging only affects capacitance and ESR.
the former doesn't reach a value of zero, at worst they can only reach down to 50% for defective capacitors but on average they only drop down by 25% for quality-passed capacitors. now only the consistency of the power output gets influenced by this capacity decline, meaning it's ripple values will increase.
the latter does affect the PSU's max capacity the most, if the ESR rises too much outside of it's given specs it may cause a decrease in overall ampere output.
now if the manufacturer designed the PSU with quality and durability in mind, they will factor in these issues on their design and shouldn't cause much problem.
one proof of this is that "most" quality PSUs does have a marginal overhead outside of their max rating, notice that 400watt rated PSUs can still run at 450watt, or even 500watt for loose OCP.
edit2: now seriously, why do people get concerned with this mythical "capacitor aging", i've yet to hear of corsair or seasonic dying because of such...
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