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Anyway to calculate PC power consumption WITHOUT watt meter?

Ok, so I recently inherited my first gaming pc. It’s nothing too special but it’s like your first car, since it’s my first it the greatest thing ever.

However, I live in Mexico and the way that the electricity bills work here is such that it is tiered. It is really cheap until you hit a certain KWh / month and the price per KWh literally quadruples (makes the price of electricity equal to around that of Hawaii).

So, point is, before I use this thing too much, I want to know if there is a way to determine how much power the heavy draw items such as the GPU and the CPU are going to draw.

Can I see how much my components are using in real time through an app for the computer?

I am fully aware that I can get a water meter (such as a Killawatt) and plug that in between the wall and my pc, however they are about 20-25 bucks and mostly I don’t want to wait for a package to arrive from amazon.

I am not looking for exact numbers but a general estimate.

My components are as follows:

GeForce GTX 1080 Ryzen 5 2600 Corsair CX600M 600w PSU 2 case fans and one cpu cooler fan Gigabyte B450M DS3H 16gb of Corsair Vengence DDR4 Ram

Thanks in advance for your help guys and gals!

-Milo

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@oldturkey03

Thanks so much for your reply! Rhis makes good sense and I’m grateful for your insight as I’m a techy person but a pc noob.

One question though.. Components use more power under load then they do at idle so if you say that you can’t see my computer using more than 350W to 400W, this is presumably when I’m really pushing it during gameplay, which won’t be my main use for it. If I am going to be primarily using this rig for day to day tasks, with only some gameplay, say on weekends, could I expect the rig to use significantly less wattage when doing simpler tasks such as browsing the internet, MS office, Spotify, etc.

If so, could you venture a guess as to how little it could use when it isn’t under massive load. Maybe 200watts ish.

Thanks again for your help!

-M

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@mfirestar your video card will use most of this. I would figure around 200-250W Streaming videos or music can be a bit of a drain but you should still be okay with that.

Just out of curiosity, solar or wind power not an option for your neighborhood :-) ?

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@oldturkey03 Sorry for the late response! Your help was invaluable! Yes, unfortunately wind power isn’t an option, and while I am desperate to install solar, as a renter and not an owner, it is hard to get permission to have solar installed in a grid tied manner. We have thought about an off the grid battery solution that isn’t grid tied, but the batteries are quite pricey.

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@mfirestar yes and off-grid installation would be best. How many old laptop batteries can you scrounge :-)?

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Hey, @oldturkey03

Sorry for the delay!

Yeah, that is what I have determined. Off the grid is much more flexible which is great for renters. An added bonus is that having pure sine wave electricity would be really nice. Mexico’s grid is incredibly unsteady and we often have brown outs and almost constant fluctuations. We have lost TVs, computers, routers, etc to storms and fluctuations, so having solar to battery to devices and not being grid tied would be safer too!

As for laptop batteries, a few MacBook batteries is all I could scrounge I think. 15” MacBook Pro 2015, 2012 MacBook Pro 13” battery and a late 2008 13” unibody MacBook battery. 😝 though most of these batteries are in poor condition due to age and the 2015 battery is a iFixit replacement part that was defective and caused a “kernel task” artificial thermal throttling in the MacBook Pro.

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@mfirestar the biggest power draw will be your GeForce GTX 1080 Ryzen 5 2600 at about 180W. Add about 5 Watt to 30Watt for your motherboards CPU (depends on the CPU) and about 3 watts per case fan. The motherboard will use more wattage depending what else you have connected in the expansion ports. Next, you will need to add your drives. Typical HDD is about 5W to 10W or SSD at about 2W - 3W. I can't see your computer using more then 350W to 400W. I would figure about 2.5-3 hrs of usage for a kWh

The harder you play and the hotter your computer gets, the more power you are using :-)

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I just put 650W power supplies in for higher end setups and 1000-1500W for those modern RTX cards. Less math, with 200W+ of headroom. Not to mention the cost difference between 500 and 650W isn't enough to do the math.

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