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I was lead to believe that gsync will sync when the framerate dips below the screens refresh rate, while vsync takes care of the opposite--when the framerate exceeds the screen's value, in this case 75.
I am wholly confused. Could you elaborate?
Gsync on the other hand is there to stabilize input lag and frame times when your framerate dips.
If you can consistently maintain above your refresh rate in framerate, vsync is essentially worthless. You won't get tearing because your monitor will never be lacking in frame data.
If you've got the power to stay above that 75hz on your monitor, all vsync is really doing is keeping your gpu usage down. But, you could do that without the input lag by manually capping your framerate with an external tool like dxtory, riva tuner, etc.
I REALLY don't see any point to using gsync and vsync at the same time. All it'd do is get all the disavantages of vsync and ruin the advantages of gsync.
"Capping the framerate" is a side effect. The framerate you're going to get when waiting for vertical retrace is usually equivalent to monitor's refresh rate itself, though the target framerate is said to be an "undefined behaviour", in programming terms.
Basically useless if you pair it with G-Sync. Just use G-Sync and you'll be fine if you don't pretend maximum quality.
As a side note, in terms of quality, the best frame-sync method is still V-Sync, which provides the best quality.
Edit: I am still curious though: if the upper limit for FPS isn't capped (at 75), doesn't that theoretically mean fluctuation, ie. 90 FPS when no enemies on screen, 75 FPS when there are, which in turn means variable performance in terms of smoothness? I'd rather have a constant. That's what I'm saying.
Let's say my laptop can handle 75 at all times, but above only occasionally. I don't want the extra smoothness of the occasional parts, I'd rather it be the same through and through. I am not talking just about cases when a game's physics are tied to FPS, but also what the eye can notice (motion picture quality)
I guess this then changes the question: can I cap the FPS at 75 without 3rd party software?
P.S.: Melody, your technical prowess intrigues me. I checked your profile and you mention UT. There's no Melody in Unreal Tournament games that I know of. What's your game? Who do you work for? Who sent you?
Your monitor always displays its framerate limit, which is usually equivalent to its refresh rate. For instance, even when the game itself runs at 300 fps, you'll likely still see 60 fps if your monitor is 60 Hz due to the monitor only being able to draw 60 frames per-second at most.
Having a much higher framerate than the monitor supports is a great way to reduce input lag, screen blurring and improve some other technical stuff, at the cost of seeing some screen-tearing. At huge monitor frequencies, such as 120 Hz or 144 Hz, it's very unlikely to see any tearing due to the huge amount of frames drawn every second, unless you're very fnicky.
In order to avoid tearing, the GPU can wait for vertical retrace, which is basically waiting for your monitor to finish before sending out the next frame. A technique that waits for vertical retrace is called V-Sync. V-Sync waits for vertical retrace before sending out frames, and this helps avoiding screen tearing. As I said, a side effect is your framerate likely being capped to your monitor's refresh rate, but this is an undefined behaviour: for instance, NTSC screens run at 60 Hz but V-Sync limits framerate to 59,94 fps as a side effect, which is not exactly 60. Some plasma screens limit framerate to 54-59 as a side effect of V-Sync.
GPUs can wait for vertical retrace without limiting the internal framerate as a side effect: an overlay is added to the surface so that a virtual surface is capped, instead of capping the internal framerate. This is called "Fast V-Sync", you can enable it in NVIDIA Control Panel.
Some advanced techniques, such as G-Sync, allow the monitor and the GPU to dynamically manage the refresh rate, so that V-Sync is not required in order to avoid Screen Tearing. I highly advice using this technique if you need a perfect balancement of quality and performance when drawing frames.
As for the UT question, I'm a well known player who belonged to a well known clan in the past, who changed nickname.
Edit: sweet jesus, I am getting ~180 FPS when set to unlimited. The future is here, gentlemen.
Melody, you've spurred my V-sync-disabling spree. I've loaded up Black Mesa, among others, and disabled V-sync. Now I am forced to enjoy 250 and above FPS. What kind of an animal would suggest this?
Man is not meant to enjoy games at such high FPS. It also fluctuates wildly. Why, Melody, why?
There are 3 components that are mainly used in games:
• Your Graphics Card
• Your CPU
• Your RAM (in terms of speed)
In short (and without going into details) framerate is capped by the following components:
• CPU is the first limitation
• GPU is the second limitation
(we'll only take CPU and GPU into account)
• The game uses your CPU as processing power: All the mathematics and logic are computed by your CPU. Depending on how much your CPU is fast, it processes this information fast or slow, so it will allow higher framerates if it's very powerful.
• The game uses your GPU as graphics power: All the graphics stuff is computed by your GPU. Depending on how much your GPU is fast, it will compute graphics fast or slow. If it's very powerful it will allow higher framerates.
So, basically, we have 2 processors (CPU and GPU) concurrently performing operations.
Let's analyze what happens if you set the game to its lowest graphics settings:
1) You'll experience higher CPU usage than normal: The GPU is basically sleeping because most of its graphics power is not being used and this allows the CPU to run at its full potential. This generates very huge framerate fluctuations.
2) You'll experience lower GPU usage than normal: As said before, GPU is basically sleeping now and you're not using most of its power. CPU, instead, is unlocked to process at maximum speed.
Now let's analyze instead what happens if you set the game to Ultra, in 4K resolution and 4x Supersampling:
1) You'll experience very low CPU usage: The game is limited by your GPU now: The game is demanding 100% of your GPU power all the time, thus limiting your CPU processing power.
2) You'll experience 100% GPU usage: The game is demanding 100% of your GPU power all the time. This limits your CPU processing power to a maximum of "X fps".
2) As long as the framerate is higher than your monitor's refresh rate, you usually don't have to worry about fluctuations that are above your refresh rate, since they'll be imperceptible most of the times (this is not always the case, but in order to explain that, it would take too much time and too much keyboard typing).
3) If your framerate is below your monitor's refresh rate, you'll likely want to make it more stable as possible, by either tweaking graphics settings or limiting your framerate.
there was a time when I had a gaming PC and a relatively slow laptop, which I mainly used to watch films in bed etc. Those were simpler times. But along came the idea to sell the gaming PC and buy a powerful laptop instead. Now, I was oft told that the laptop would perform much worse than my PC did, so my expectations were adjusted accordingly. It was a compromise I was willing to accept...
Then the day came. I had gotten my new laptop and started Serious Sam 3: BFE, expecting my mind to be blown away by it's performance due to the game being relatively old. What I got instead, was a sour taste in my mouth (figuratively speaking, though I like sour candy but I did not have it at the time), as the game performed rather poorly.
At this point I had almost resigned to a world of low detail, low fps gaming. My happiness in this life had come to a close. Or did it?
Once already shrugged off Serious Sam Fusion caught my attention. This time around I was willing to put aside my--in retrospect--misconceptions about it being just a utility that enables one to switch games without quitting them but still needing them all installed. What I found was that not only did I not need all the previous installments installed, but the games were patched beyond belief! And so, using the built-in Autodetect feature I was able to achieve enviable 60 FPS on almost highest settings (sadly, the CPU is deemed "medium", but it was to be expected). Thinking to myseld "I'd better not push it, modesty is key" I set the FPS lock at 60.
Days went by as I played the game happily, alone and with my friends alike, feeling proud of the graphical detail I had the pleasure of enjoying, and at 60 FPS, no less! Then, along came Melody. This sweet, sensual being, filled to the brim with knowledge, kindness and patience that would eventually lead me to believe that it's a Terminator, sent from the future to find John Connor and, this time, help me explain how gaming thingies work.
Lo and behold, I heeded Melody's advice, disabling the lauded V-sync. Nothing would ever be the same again. For now, I am become FPS unlocked. I now see the world with greater clarity. No more distant, blurred visions of harpy breasts. This time, it was full monty.
Rest assured, dear reader, that my newly acquired power does indeed come with great responsibility and I am accutely aware of that. Knowing this, I shall make great effort to spread the word of my gaming exploits to my friends, strangers and foes alike. Let it be known, gentlemen (as there are, indeed, no gentle ladies on the interwebs), that I will henceforth be known as: Tilen, the 120 FPS capped.
Melody, this was for you.