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Forums - Sony - Why does PS4 Pro not have an option for 60fps?

 

Which do you prefer for Pro?

1080p60fps with a lot better graphics 118 81.38%
 
2K60fps with better graphics 12 8.28%
 
4K30fps upscaled with better graphics 7 4.83%
 
4K60fps upscaled with similar graphics 8 5.52%
 
Total:145
Slimebeast on 15 September 2016
OttoniBastos said:
Slimebeast said:

No. You specifically claimed that a doubled framerate requires a double the CPU power.

"This 30% improvement is not enough to allow twice the physics/AI calculations per second.(which is required to have twice the framerate)"
"double the framerate -> double the amount of data  to process on the cpu in the same time frame,thus,double the clock is needed"

But it's simply not correct.

Physics and AI scripts aren't tied to framerate in modern games, but graphics are.¹

The CPU uses the same amount of calculations for the physics and the AI no matter if the framerate is 30 or 60.²

If want to run Witcher 3 in 60fps instead of 30fps, I need x2 the GPU power, but only 10% more CPU power (andf the extra 10% are for the increased amount of draw calls for to the GPU, not to calculate extra physics or AI).³

 

¹ Tell that to japanese developers

² Only if the game is calculating AI and physics once per second which is not what happens.

³ That is because as i said,developers  can compensate cpu weakness with GPU IF THEY ARE WILLING TO DO(spent time and money with it).Also,only 10% extra cpu to double the framerate? This is only possible if the game was not using the CPU full power in the first place(e.g. Having the best i5 of the market). 

You don't agree with me? fine! Lets watch how many PS4pro games will run with double framerate in comparison with OGPS4.

I have replied to this before but I'm doing it again because I have to correct my erroneus claims.

In opposition to your original claim that doubling the framerate requires a doubling of CPU power, I in turn claimed that you'd only need 10% extra CPU power to double the framerate. But after I stumbled upon a Digital Foundry video touching on the subject I found that my claim was so wrong that I needed to reply here because I don't want to spread false information.

In the context we both meant, the PS4 Pro versus the regular PS4, and in the context of modern games on the PC in 1080p resolution and going from 30fps to 60fps, I now realize that a 10% increase in CPU power is nowhere near enough to accomplish that. It's still not correct that a doubling of CPU power is required, generally speaking, but in most real world scenarios it's going to be a lot more than just 10%.

It seems for example that the physics simulation in many Western game engines (not just in some atypical Japanese games) is largely tied to framerate and doesn't run independent of the framerate (while some other simulations might).

Here's the video. Skip to 4:36 where they start the discussion of PS4 Pro and framerate.



In short, the 31% increase in clock-rate in the PS4 Pro is not enough to increase the framerate from 30fps to 60fps in Uncharted 4 in 1080p.

Btw, this video is a great demonstration to back up the popular opinion that using extra hardware power to increase the framerate is more worth it than using it for a higher resolution. They were able to create this 60fps photage of Uncharted 4 by using the slow-motion bonus feature in the game and then running it at twice the speed in an editing program. The smoothness here is fabulous.

Just compare the above with the the original 30fps: