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lostindos55   06-12-2009 at 07:23:27 PM

Hi All, I'm looking to update my pc, Just working out power usage.

I notice monitor power usage can be 50-200 watts or so, my question is, if the monitor is plugged into the mains, is this power drawn from the PSU?. I assumed it was drawn from the monitors own power supply, but just wanted to check what, if anything would be drawn from the PSU on average for a 22inch WS display.

Also when i add 50% capacitor aging, the extreme psu calculator lists me at around 880w in total, other calc lists me around 620w, I just want to make sure I have a good amount of headroom to account for capacitor aging, etc.

Would putting 40% aging in be plenty to have enough headroom for years into the future?.
(q9550, 295 gtx, 4gb ram, 1200 case)

Thanks.

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jaydeejohn   06-12-2009 at 08:01:23 PM
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Havnt really checked, but itd make nosense to draw the 120V for your monitor off your psu, so I believe its just redirected from the wall thru your rig.
As for putting that much diminishment on your psu, itd have to be fairly old to do so. Id say 30% should be enough, cause by then, youll be sporting a new rig

------------------------------ I went drifting, thru the capitols of tin, where men cant walk and cant freely talk, and sons turn their fathers in
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theAnimal   06-13-2009 at 12:39:20 AM
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lostindos55 wrote :

I notice monitor power usage can be 50-200 watts or so, my question is, if the monitor is plugged into the mains, is this power drawn from the PSU?. I assumed it was drawn from the monitors own power supply, but just wanted to check what, if anything would be drawn from the PSU on average for a 22inch WS display.



A 22" LCD will not use anywhere near 200W.

I would recommend a Corsair HX750 or 850 PSU.

------------------------------ *How To Ask For New Build Advice*
HAF 922 | HX750
Rampage2Gene | i7 920 D0 | 6GB Gold 1600 | Hyper 212+
Caviar Black 640GB | HD3870
 Reply to theAnimal
lostindos55   06-13-2009 at 02:14:07 AM
- 0 +

Thanks.

I already have a thermaltake toughpower 850w so I assume this should be enough for those upgrades.

i think the monitor I have in mind uses about 60w.

Can anyone confirm that the 60w would not be drawn from the PSU?. or what amount if any the monitor would take from the PSU.

Thanks again.

Reply to lostindos55
theAnimal   06-13-2009 at 01:47:44 PM
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Unless you plug the monitor into the computer there is no way it can draw power from the computer's PSU.

------------------------------ *How To Ask For New Build Advice*
HAF 922 | HX750
Rampage2Gene | i7 920 D0 | 6GB Gold 1600 | Hyper 212+
Caviar Black 640GB | HD3870
 Reply to theAnimal
Bronze CPUs badge jsc   06-13-2009 at 01:53:44 PM
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And most modern PSU's do not have the monitor power connector.

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lostindos55   06-13-2009 at 06:47:11 PM
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Thanks for confirming.

Just wanted to make sure I don't need to account for an extra 60w when working out if the PSU will be enough.

considering i done 100% tdp and 100% system load + 40% capacitor aging and still was just under 850w it should include plenty of headroom for an 850w psu I assume.

Thank you.

Reply to lostindos55
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