drmcninja wrote:I was browsing through some of the posts, what's this about MPRF > 1 plus hitting RTSS frame cap = reduced input lag? Is that really a thing?
So if you're running Overwatch at 300fps cap, but only max out at 260fps under the most load, let's say, you can reduce input lag by setting the in-game fps limiter to 258fps?
This doesn't really mean anything with Fast-Sync though, right? That automatically seems to cap FPS on its own (and if you can hit that frame cap without issue, I assume there is no additional input lag beyond what Fast-Sync typically introduces).
You'll have to ask RealNC for further clarification on that, and I'd have to ultimately test it to verify. It would be very difficult to replicate/isolate properly, so no ETA/rush on this for me.
Exactly, that's why I specified "maximum thread usage" in my previous reply
So that value is the max value among all the 8 threads of my 2600K. It's 88% so it's not reaching the max, hence CPU is not bottlenecked.
I just tried disabling multicore rendering right now and I got even lower framerates, for some reason.
kevindd992002 wrote:Thanks for the testing. But with 88% maximum thread CPU usage, will I still see increase in performance when upgrading to 7700K? I would understand this if one of my threads is pegged at 100% but with my situation I'm kinda confused.
As far as I understand it, just because you're not "maxing out" one of the threads 100% does not
mean your CPU isn't
the bottleneck to your GPU. There is more to it than that.
The majority of games rarely use any or all of the CPU cores/threads 100% as is, so even if they are reading 88%, it can be a false positive on the "not bottlenecked" indication; if you're at very high usage percentages with your CPU, and very low usage percentages with your GPU, even at its max core clocks, then either the game engine or the CPU is bottlenecking max GPU usage.
Faster CPUs may not eliminate this behavior in games that are CPU heavy, but they will allow the GPU to fullfill more of its potential. E.g. where 88% core usage on the 7700k would allow more GPU usage, the 88% on the 2600k would not, as the 7700k would have a higher performance ceiling, and what is 88% to the 7700k, could be 108% to the 2600k; It's all relative.
For instance, I have a 4770k and a 1080, and I get 200+ more frames than you do at 1440p, and the max usage on one of my cores can peak at 92% with V-SYNC OFF/Multicore Rendering enabled (average total CPU usage is 38%).
My 15-20%+ increase in performance estimate across CPU-limit situations with a 7700K vs. a 2600k still applies, and may be conservative in some instances, especially considering your 1080 Ti. The 7700k also has much faster single core speeds when compared to the 2600k, which may help in games such as CS:GO.