Is there a way to estimate monitor power consumption from the spec alone?

[e22big]

I have been intrested in Aorus new 43 inch monitor but its power consumption is absurd like almost 300 watt on average as per spec sheet. That was a very sharp contrast to the ROG model with almost the same spec (and most likely using the same panel) but report only 50 watt usage. I wonder if this is accurate because Gigabyte seem to report an absurdely high power consumption figure for most of their monitor line (their 28 inch reproted a 100 watt power usage for example), other than asking them directly (which I plan to do) is there anyway to verify these figure? 

 

I suspect that they measure their power usage at the very max brightness while Asus probably reported their at 150 nits something, but knowing these people I doubt they would over rather than under report the usage of their monitor power.

[Master Disaster]

You can work out the maximum, its called ohms law. You just need to know the volt and amp usage but as you've already said, the answer is it depends on how bright you run it at.

[Glenwing]

3 hours ago, e22big said:

I wonder if this is accurate because Gigabyte seem to report an absurdely high power consumption figure for most of their monitor line (their 28 inch reproted a 100 watt power usage for example), other than asking them directly (which I plan to do) is there anyway to verify these figure?

They're probably including USB device charging power or something like that.

[e22big]

7 hours ago, Glenwing said:

They're probably including USB device charging power or something like that.

oh, I finally get a hand on their technical spec and they mentioned that it's actually 240 watt at max (which is not amazing but still better than 300 watt) so I guess it's likely they include USB charging 

 

Do you think this figure is even possible though? I know that it's HDR 1000 and all that but I have a hard time believing that a 43 inch LCD would be using more power than a 48 inch OLED or 55 TV, even one that can go 1000 nits doesn't use that much

[SolarNova]

That will be peak power usage.

 

As in trying to display full brightness HDR 100% white field.

 

Average usage will be much lower in all likelihood.