How to figure out total power draw of a GPU?

[NameTaken]

Corsair Link shows my AC input, DC output, efficiency, temperature, fan speed, etc.

I also have the Corsair PSU. But it is expensive.

I got Corsair refurbished units for 50% off.

[1714023036]

1714023036

[1714023036]

1714023036

[1714023036]

1714023036

[Jackblow33]

I am surprised so many people are recommending the kill-a-watt when in testing they prove to be inaccurate. The numbers can be skewed by +-10% with a kill-a-watt. Specifically with PC power supplies there are issues of it reading wrong and showing 100% efficiency. The proper way to measure your power is with an amp clamp on your power cord. You test the amperage then multiply it by the voltage to get wattage.

Say for example your rig is pulling 7.3 amps at 116 volts. With those numbers your rig is drawing 847 watts.

Test with 1 card, then 2, etc to see what your cards are actually pulling.

Can you really read amp with an amp clamp on power cord? Have you did that cause as far as I know Amp clamp are meant to be used on a single phase conductor ?

[namjey]

If you live in US, then just go to any city library. They usually have powermeters. I borrowed one for a month to check my exact usage. Other option is just to buy one. They are around 20 bucks

[Appuned]

Corsair Link shows my AC input, DC output, efficiency, temperature, fan speed, etc.

I also have the Corsair PSU. But it is expensive.

I got Corsair refurbished units for 50% off.

I have the refurbished units, 30% of them died after a year.

[crazydane]

If you really want to track power consumption over time for many rigs, this is the way to go:

http://www.brultech.com/greeneye/

Each GEM will do 32 rigs.  You can add more GEMs as needed if you have more than that.