VR Reprojection - does it make GPU Overclocking pointless in most cases?

[Adam]

Hi,

 

Total noob question I know. The reason I ask is as I understand it, Re-projection will lock my frames at 45fps unless I can get 90fps out of it, at which state then it will jump to 90fps. There is no 'in between'. If I'm capable at running 46fps, or at 89fps - the experience will be identical?

 

If so - let's say my card without re-projection is running at around say 55fps without overclocking, and I can get 75fps if I overclock (I have no idea what sort of improvement I could even expect to get with overclocking and if this is even realistic), wouldn't re-projection still force it back to 45fps and my experience be identical between overclocking and not? I'd only be adding extra stress to the hardware for no return?

 

If so, wouldn't that mean overclocking is only worth while if my FPS are getting close to 90FPS and overclocking will push me over the end, and in other situations I might as well not even bother?

 

Or is there other factors at play here I'm unaware of?

 

(I'm talking solely about GPU overclocking - ignoring CPU).

[Taz1004]

If you simplify it for the sake of argument, you're right. GPU upgrade or overclocking can be seen as visual quality improvement. Such as improving SS or MSAA without hurting performance. If you OC and get more GPU headroom between 45 and 90fps, you can use that to improve visual quality.

 

But then this is all depending on how you look at it. If you're getting 45fps with current setting and increase MSAA for example and you lost frame rate to 40fps. Then you OC your GPU and brought it back up to 45fps. You can say you gained performance from OC'ing.

[Adam]

Cheers Taz. Yes - that make sense. If you're on the border/edge and a small % of increase will get you 'over the edge' for the next nicety then it's worth it. But otherwise if you're 'in the middle' to to speak - it's probably not.

 

MSAA and SS seems to give a huge hit from what I can see. Does OC really allow you to enable it without a hit. (I thought O/C was smaller amounts - like at the very most up to 10% improvement)?

[Taz1004]

Cheers Taz. Yes - that make sense. If you're on the border/edge and a small % of increase will get you 'over the edge' for the next nicety then it's worth it. But otherwise if you're 'in the middle' to to speak - it's probably not.

 

MSAA and SS seems to give a huge hit from what I can see. Does OC really allow you to enable it without a hit. (I thought O/C was smaller amounts - like at the very most up to 10% improvement)?

 

MSAA and SS was just an example. Reason for OC'ing and reason for upgrading GPU is basically same. To get better graphic quality.

 

Many people say upgrading to 3080 is useless because DCS is CPU bound but if upgrading to 3080 can get me 30% more SS without dropping FPS, it's worth it for me.

 

Likewise, if OC'ing can get me 5% more SS, I'd do it.

Edited October 1, 2020 by Taz1004

[Adam]

MSAA and SS was just an example. Reason for OC'ing and reason for upgrading GPU is basically same. To get better graphic quality.

 

Many people say upgrading to 3080 is useless because DCS is CPU bound but if upgrading to 3080 can get me 30% more SS without dropping FPS, it's worth it for me.

 

Likewise, if OC'ing can get me 5% more SS, I'd do it.

 

Aah -I think I get it.

 

So you'll run as close as you can to the lower end of 45fps (or as close as you can get to 20ms) without going over so that you get the best graphics whilst still running at 45fps?

 

Maybe that's how I should be trying to go about it. Change SS to 100%, setup everything else with what I'm willing to accept, and then just creep SS up until I get just below 20ms (or just above 45fps) and lock it in?

[Hoirtel]

Aah -I think I get it.

 

So you'll run as close as you can to the lower end of 45fps (or as close as you can get to 20ms) without going over so that you get the best graphics whilst still running at 45fps?

 

Maybe that's how I should be trying to go about it. Change SS to 100%, setup everything else with what I'm willing to accept, and then just creep SS up until I get just below 20ms (or just above 45fps) and lock it in?

 

This really depends where you do your testing. FPS varies so if you test in worst case scenario (deck of supercarrier + AI for me) and get 45fps then you will likely see 90fps when cruising at 30,000+ft over the sea.

 

I would overclock your GPU if you can. You may as well get all you can out of it, otherwise its just wasted. Its pretty easy, much easier than OCing a CPU.

[speed-of-heat]

In honesty there is not much different in oc'ing the cpu than a gpu, I still do mine innuefi/bios but for the majority of cases it's a case of watch a YouTube video for your hardware and then stepping in small increments.., just like you did with a gpu... And depending on the board, you can likely do most of your oc from inside windows just like you can your gpu.

 

To answer the question it depends. The way I think of it, is if you are buying a ftw3 card or a k series processor your are quite literally leaving money on the table by not oc'ing them... You have paid a premium for the privilege of being able to oc them.

 

I oc my graphics card and I get some very acceptable perf on some reasonable settings for me, if I didn't oc my graphics card, I would get less perf or less eye candy.

 

If I didn't use reprojection/motion vectoring I would not get a smooth vr experience, I know this because I turn it off to do fps bench marking in setting changes, they do different things... At 56 fps vr is gut renchingly unplayable at 45 it's supersmooth... But the reason I can get super smooth 45 is I have very low frame times, which I get because I oc my graphics card.

Edited October 3, 2020 by speed-of-heat

[hansangb]

Hi,

 

Total noob question I know. The reason I ask is as I understand it, Re-projection will lock my frames at 45fps unless I can get 90fps out of it, at which state then it will jump to 90fps. There is no 'in between'. If I'm capable at running 46fps, or at 89fps - the experience will be identical?

 

If so - let's say my card without re-projection is running at around say 55fps without overclocking, and I can get 75fps if I overclock (I have no idea what sort of improvement I could even expect to get with overclocking and if this is even realistic), wouldn't re-projection still force it back to 45fps and my experience be identical between overclocking and not? I'd only be adding extra stress to the hardware for no return?

 

If so, wouldn't that mean overclocking is only worth while if my FPS are getting close to 90FPS and overclocking will push me over the end, and in other situations I might as well not even bother?

 

Or is there other factors at play here I'm unaware of?

 

(I'm talking solely about GPU overclocking - ignoring CPU).

 

 

It's locked at 45FPS, but you (ideally) don't want to go into reprojection. Because the drivers are guessing on the missing frames. It gets it right most of the time, but things like propellers are problematic for reprojection.

 

So if OC'ing reduces the reprojections, it would be worthwhile.