Originally Posted by herkalurk
Well it just says 'computer utilization' not 'time you'll be using at full load'
I work at home, so my computer runs from 9 am to midnight most days.
But what's it doing that whole time? How much of that time is it just idling and how much of it is the entire computer being maxed out? When you're working, what are you really doing? Think about how demanding your tasks are (I'd doubt they're any more demanding than a typical YouTube video).
Also, hover your mouse over "Computer Utilization". You'll see this:
"Computer Utilization is directly related to PSU's components aging. When used heavily and over an extended period of time (1+ years), the power supply will slowly lose some of its initial wattage capacity, so plan accordingly!"
To translate this, each option from that list means "the entire computer is under full load for this much time each day". I really doubt your computer is maxed out for 16 hours per day. If it is, then ok it is, but I would bet it's not.
So let's look at the "1 Hour Per Day" results:
http://outervision.com/b/mfK7bhXOV PSU Calculator part listMotherboard:
Socket LGA 1150CPU:
1 x Intel Core i7-4770CPU Speed:
2 x 8GB DDR3 ModuleVideo Card Set 1:
2 x NVIDIA GeForce GTX 1080Core Clock:
2645MHzSLI / CF:
2 x SSDStorage:
2 x SATA 7.2K RPMOptical Drive:
1 x DVD-RW/DVD+RW DriveKeyboard:
1 x Gaming KeyboardMouse:
1 x Gaming MouseFan:
3 x 200mmFan:
1 x 140mmComputer Utilization:
1 hour per dayLoad Wattage:
+3.3V: 12.1A, +5V: 12.0A, +12V: 45.8ARecommended UPS Rating:
1100VAGenerated by eXtreme PSU Calculator 2016-07-08 03:22:17.0
Do you see the 649W "Recommended PSU Wattage"? (it says "Recommended PSU
Wattage" on the page) That's calculated by adding all of the Amperage values together, which is basically like saying, "We're assuming that your entire computer is under full load here, maxing out the 3.3V, 5V and 12V rails simultaneously. All 3 of the Amperages together here comes to 649.53W. I am recommending a 650W PSU and I am saying that it would be plenty. Interesting.
So this "Computer Utilzation" means, the entire computer (every last thing on this list) will be at 100% utilization for that entire duration, whether it's 1 hour or 24 hours per day. 1 hour is plenty to find out how much power you need. I mean, when you're talking about a high-quality PSU, you don't have to worry about that statement about the PSU's components aging or the gradual reduction in the PSU's output capacity, etc. All you have to worry about is how much power you need, and again, a good quality-made 650W PSU would easily be enough for this - especially while gaming.
How many hours per day are you putting the computer under very heavy loads (such as playing the most modern and most demanding video games)? A few hours? At most, your power consumption while gaming will top out at around 550W, while averaging just a little lower than that, likely riding 475-525W. This calculator's results claims the "Load Wattage" will be at 599W, but that's adding everything
together at full load, which is unrealistic and pretty much never happens. I mean, it includes everything that's being powered by the PSU.
So, I think I might go back to liking this PSU calculator because the "1 Hour Per Day" option isn't all that bad. After all, we here at Overclock.net use and recommend high-quality PSUs. We don't mess around with cheap stuff that can wear out with component aging and gradual loss in output capacity over time from heavy use. Like I said, I'm recommending a 650W PSU, and this calculator is recommending a 650W PSU (649W) as well. I'm still suspicious though because of how it arrived at that 649W, so this could be a happy coincidence... Still, I'm almost impressed, especially compared to the state this calculator was in when it launched on August 1st 2015.Edited by TwoCables - 7/8/16 at 12:57pm