Question Accurate Online Power Estimator

[bob4432]

As title states, I am looking for an accurate online Power Estimator. Any help would be much appreciated. Thanks

 

[Furious_Styles]

Try the EVGA power meter. It's simple and does a decent job. I find that almost all of them over-estimate. I just put my main comp in and it said I needed a 750W which is good imo. Under a heavy load (synthetic) it pulls 600-700W.

 

[UsandThem]

All the online calculators I've used tends to over recommend the power supply size.

That said, if you read a review for the CPU and GPU you will buy, and look at the worst case power consumption of those two items, you should be able to see what size you need as those two components are responsible for almost all of the load.

Things like the motherboard, RAM, drives, fans, etc. don't use much power (unless you are planning on using something crazy like Delta tornado server fans).

 

[bob4432]

Thanks, I will take a look @ max power from gpu & cpu and add an extra 50W for m/b, ram, Optical Drive )), NVMe drive/s, SSD/s and a spinner or two. I think that should cover with headroom the extra over cpu & gpu. I did not even think to look at reviews for worst case scenarios, again, Thank You!

 

[bononos]

As title states, I am looking for an accurate online Power Estimator. Any help would be much appreciated. Thanks

I'd just lookup some GPU reviews since the gpu is typically the most power hungry component for many builds, and review testbeds will have some high end cpu to not bottleneck the gpu. For example the total power consumption for an Nvidia 2060 is ~250W. Even if the review website only gives the gpu power consumption, its not difficult to work out the total power consumption by checking some cpu reviews.

 

[aigomorla]

Thanks, I will take a look @ max power from gpu & cpu and add an extra 50W for m/b, ram, Optical Drive )), NVMe drive/s, SSD/s and a spinner or two. I think that should cover with headroom the extra over cpu & gpu. I did not even think to look at reviews for worst case scenarios, again, Thank You!

I would always go over by 30% and not a set wattage like that...
Ideal max performance conditions on a PSU is somewhere right below 80% @ Full load.
This is why standards are usually determined @ 80% efficiency @ X Loads.

Personally, i would not look at anything below 750W if your system has a dedicated GPU as 750W-850W psu's are in its own sweet price point.
Higher wattage PSU's do not draw more wattage then lower ones.
It only draws whats needed, and overshooting will also allow the PSU to run quieter, as lower loads = less heat on the PSU which also translates to quieter fans.

 

[bob4432]

Appreciate all the suggestions. Going to go w/ 750W 80+ Gold PSUs for the ones w/ dedicated GPUs (RX580 & RX570) & 550W 80+ Gold for the ones with an integrated GPU (some flavor of an integrated Intel setup I THINK (nothing is set in stone) - not sure how the 3rd machine will be used but I am thinking of a private game server since I have been out of gaming for A LOOONG time - need to just get my a$$ handed to me by close friends for the near future and need to get some gaming time in rather than just getting killed everywhere I would go on a public server).

 

[mikeymikec]

nvm