Appoximately how much does it cost to run a laptop 24/7?

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drahlz

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Aug 25, 2014
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I have an ASUS ROG-GL551JW that I leave on 24/7 wondering if it would be more affordable to purchase a raspberry pi to leave on 24/7 instead? A raspberry pi on Amazon is about $50 with a case/power cable. How long would it take to recover the cost of the raspberry pi or would it make more sense to just keep leaving the laptop on 24/7?

Not sure if it matters, but my laptop power brick is a ADP-120RH B

Thanks!
 
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This depends on what the laptop is doing.
And what the replacement Pi would be doing.

Does the laptop sleep when you're not using it? Or is it doing 24/7 Folding@Home or bitcoin mining?

Assume the laptop draws 120 watts at absolute full power, and is running 24/7
~$125/year to run it....

USAFRet

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This depends on what the laptop is doing.
And what the replacement Pi would be doing.

Does the laptop sleep when you're not using it? Or is it doing 24/7 Folding@Home or bitcoin mining?

Assume the laptop draws 120 watts at absolute full power, and is running 24/7
~$125/year to run it.
http://www.rapidtables.com/calc/electric/energy-cost-calculator.htm
MWM0H8R.png


That is a worst case scenario
Your laptop probably doesn't draw 120 watts, nor is it doing that 24/7.

 
Solution
It's near impossible to say definitively. The GL551JW has a 120W power-brick, but that's the absolute max.....it's unlikely to ever be running at 120W, but for arguments sake, let's say it's running at full-power 24/7.

Electricity is generally somewhere between $0.10-$0.25 per KWH (Kilowatt hour), with 8760 hours in a year.
Taking the lowest $0.10 x 8760 KWH = $876 annually, or /1000 = $0.876 per watt, per year.
Taking the highest $0.25 x 8760 KWH = $2,190 annually, or /1000 = $2.19 per watt, per year.

So, assuming 120W (which it'll never hit) x $0.876 = $105.12
or x $2.19 = $262.80 annually.

So, somewhere between $100-$265 annually, if truly running at 120W.

If it's running fairly average (40-50W probably), you'd be looking between $35 (40W @ $0.876)-$110 (50W @ $2.19).
 

drahlz

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Aug 25, 2014
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4,560


Thanks for all of that info. I will need to review it a little more closely. The laptop isn't doing anything intense. I actually play a few browser games on it that I leave opened so it really isn't doing a lot. Running maybe 5 tabs of Chrome. It does stay powered up all the time, although I should probably set the display to dim when not in use (sits at 100% right now). I also use it for remote access if needed to check banking/medical information when away from home.
 
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