Everyone talks about 40 fps limit, but I don’t have it

[nicktodorov]

A lot of comments and guides talk all the time of limiting fps to 40 and lowering resolution with scaling to save battery .

My dexk says it has the latest fw and I don’t see 40 in the fps slider. I can either pick 30 or 60, nothing in between.
And also tried with two of my games and I cannot change resolution in ingame settings . That option is greyed out.

What am I missing ?

[AceHercules1196]

Originally posted by nicktodorov:

A lot of comments and guides talk all the time of limiting fps to 40 and lowering resolution with scaling to save battery .

My dexk says it has the latest fw and I don’t see 40 in the fps slider. I can either pick 30 or 60, nothing in between.
And also tried with two of my games and I cannot change resolution in ingame settings . That option is greyed out.

What am I missing ?

Below the frame rate limit there is a refresh rate option

[Damien Grief]

The display's refresh rate must be set to 40 Hz to be able to set the framerate to 40 fps.

[nicktodorov]

Thank you.
Another question :
What is better for battery life and what for better performance / how the game loooks? 60Hz and 30fps vs 40Hz 40fps?

[Joreel]

Originally posted by nicktodorov:

Thank you.
Another question :
What is better for battery life and what for better performance / how the game loooks? 60Hz and 30fps vs 40Hz 40fps?

The battery in general will last longer at 40fps and honestly for most games you really won't see any really difference fps wise at 40 vs 60. It honestly depends on the game really.

[SillyWalk]

Originally posted by nicktodorov:

Thank you.
Another question :
What is better for battery life and what for better performance / how the game loooks? 60Hz and 30fps vs 40Hz 40fps?

In terms of battery life, from better to worst:
- 30fps@60hz
- 40fps@40hz
- 60fps@60hz

In the end, what matters the most are the fps, because those are the images that you're telling the game to create, and that's the hard part. Once you have that image, showing it multiple times is not as resource intensive as creating it. Think of changing the hz mainly as something you do to match the fps so it looks better (40fps@40hz looks better than 40fps@60hz). Notice how the hz is once/twice the fps.

Using the first two configurations I wrote as an example, telling the game to generate 10 less images saves more battery than telling the screen to blink 20 times less.

The special thing about 40/40 is that the time each image is shown is exactly in the middle between their durations at 30fps and 60fps; it's the middle ground between quality and battery.

[kiotheslayer]

I am having an issue with this now too. I have previously been able to set my SD to 40fps but now the refresh rate no longer appears below the framerate limit so I can't...Anyone know what's going on or how to find it now?