Cost of my PC to run 24/7?

tech savvy

tech savvy

Active Member
I was wondering if any one knew the formula to find out what it cost me to run my PC 24/7 at full load? Lol, or you could just tell me what it would cost.

I pay on average 9.025¢/kWh.
 
E(kWh) = P(kW) × t(hr)

so in your case, it is:
E(kWh)= P(.85) x t(24)
20.4=.85x24
so $1.84/day or $672.461/yr.

Edit: assuming your supply pulls 850 watts from the wall all day.
 
tech savvy said:
I was wondering if any one knew the formula to find out what it cost me to run my PC 24/7 at full load? Lol, or you could just tell me what it would cost.

I pay on average 9.025¢/kWh.
Click to expand...

Bit off topic, but what do you want to actually use it for? If by full load you mean, the CPU is on 100% constantly?
 
wolfeking said:
E(kWh) = P(kW) × t(hr)

so in your case, it is:
E(kWh)= P(.85) x t(24)
20.4=.85x24
so $1.84/day or $672.461/yr.

Edit: assuming your supply pulls 850 watts from the wall all day.
Click to expand...

Almost correct ;)

What Wolfe is forgetting is efficiency.

The power supply is rated at 850W, however that is in DC, and it has to convert AC to DC at an efficiency of 90%.

That means at full load it will draw 935W from the wall, which is 0.935kWh x 24 hours = 22.44kWh / day @ $0.09025/kWh = $2.0216 per day

Thats $737.884 per year.
 
^ bingo bingo. But YMMV if you are not pegging the cpu and gpu...most likely will be a quarter of that plus gotta account for monitors.
 
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