How to measure the real load on the power supply?

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Collected two computers on the Core i5.

One seller was persuaded to put a 600-watt power supply, the second was a full-time block at 200 watts.


Both computers are working properly. What is the easiest way to understand: do 200 watts, or, and this is the junk stock?


Sticking a multimeter in the context of 220 volts?
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> To stick a multimeter into the incision 220 volts?
As an option. However repeatedly met with the fact that instead of the current value of the alternating current, the multimeter shows anything.
You can determine the degree of BP load indirectly, on the level of heating. Many units have a fan speed controller depending on the load. If the fan plowing at maximum speed, so the power reserve is almost gone.
We should not forget that the power consumption of the computer is very uneven. A large peak is at the time of inclusion.
I would in your place not to skimp, and put BP obviously with the stock.
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And the point in saving? You can put a nice kW PSU (as I did with my filipovici — 16 DB noise), and consume it will as long as you need the machine.
On the PSU to save money makes no sense at all, especially if you have the opportunity to purchase a PSU with detachable cables.
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How to test the PSU on overclockers.ru
\rixbt.com
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I think just sticking a multimeter — nothing. BP operate in pulsed mode and can have different efficiency.
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Oleg Artamonov from Vcentre was measured. And even a special load device soldered. Should probably read his article. Like this: www.fcenter.ru/online.shtml?articles/hardware/tower/6484
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The power supply should be commensurate to the load.
As the scheme of work, unit — pulse — the efficiency at low load is very low — around 50% for example, and under load about 40-50% — will rise to 75-80% ie no-load a large part of the energy produced will go to the heating of the components of BP -) + if the load is small on the basis of the 12V bus and 5V more for example — may also decreases efficiency.
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For the above computer (assuming no external graphics card, 10 Seagate 15000 harddisco and miniature welding machine) — 350 W ("real") enough for the eyes. Such computer in peak load potreblyaet in the area of 200W, which is divided by the 0.75 efficiency = 270 watts. And 80 remains in reserve, in case of dry condensers/operating in hot weather.
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Interesting article — www.fcenter.ru/online.shtml?articles/hardware/tower/26716
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Generally strongly recommend p
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1. Stuck the ammeter in the cut, effective and visually.
My config:
Inel Quad Core 8200@2800Mhz,
2xSeagate Barracuda in Raid0
4Gb DDR2 Ram@1066Mhz
Radeon 5830@1000Mhz Gpu.
The load showed 1.2 amps that total about 275 Watts. And in a mere 0.3 amps ~ 70 Watts.
2. You can use a power calculator, it has never failed.
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It's probably not your case, but... some bespereboyniki can show the power consumed by the load.
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