Taedrin
Gallente
Golden Mechanization Protectorate
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Posted - 2009.05.04 13:23:00 -
[1]
Edited by: Taedrin on 04/05/2009 13:26:35
 Originally by: Akita T
Edited by: Akita T on 17/04/2009 16:58:02
Turning VSynch off just so you can SHOW OFF your "omfg, 279 FPS EVE, wtfbbq" is downright stupid, because it's KNOWN to have contributed a lot to premature frying of several video cards.
Also, like many, MANY people have said here before, if the monitor can only display 60 (or 75, or 100, or 120, whatever), there's no BENEFIT in turning VSynch off ("Interval immediate") other than the FPS e-p33n number on the FPS monitor. At best, you will see half a frame and half of the other with a bit of tearning in-between, but that's just stupid.
In EVE, at pretty much all times, VSynch should be turned on (Interval one) and left that way forever.
It has no serious drawbacks (some MIGHT argue that it doesn't "feel that dynamic anymore" because they were used to the tearing effect) but a lot of benefits compared to the alternative (longer vidcard life, for starters).
NOT ALWAYS TRUE.
Vsynch keeps the graphics card synched with the monitor, and this is all well and good if the graphics card is fast enough to "keep up" with the monitor. But if your graphics card is rendering an intensive scene, vsynch has a couple of consequences. First off - vsynch will NOT start updating a scene on the monitor until the monitor is finished drawing the last frame. This means that if you have vsynch enabled, your frame rate will either be: 4fps, 7-8fps,15fps, 30fps, 60fps. Please note that the FPS being displayed by EVE, FRAPS or what not is actually an AVERAGE frame rate. Not the actual current frame rate, so it will display different numbers.
Here's an example that I've posted on these forums before:
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In this example, your FPS is 5/6 of the refresh rate.
Interval immediate:
f1 f2 f3 f4 f5 f6
1111 1111 2222 3333 4444 6666
1111 2222 2222 3333 4444 6666
1111 2222 3333 3333 4444 6666
1111 2222 3333 4444 4444 6666
Interval one:
f1 f2 f3 f4 f5 f6
1111 1111 3333 3333 5555 6666
1111 1111 3333 3333 5555 6666
1111 1111 3333 3333 5555 6666
1111 1111 3333 3333 5555 6666
You see here that Interval immediate only drops frame #5, but is only able to draw a portion of frames 2-4 on time. Interval one drops frames #2 and #4 so it can get a head start on Frames #3 and #5 (so it actually finishes #5 on time) However, more frames were dropped under Interval One than interval immediate.
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EDIT: You will see that while Interval immediate does more work, it introduces an artifact called "tearing" into the rendering process. Vsynch will cause your effective frame rate to drop, but will eliminate "tearing".
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Taedrin
Gallente
Golden Mechanization Protectorate
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Posted - 2009.05.04 13:37:00 -
[2]
Originally by: Chribba
So, in order for LEAST wear&tear (heat) - vsync+interval one is the way to go? I'm fine with 20fps if that means my GPU sticks at 50C rather than 85 I'm all happy. What to do?
Yes. Interval Immediate tells the graphics card to do as much work as it possibly can, while interval one (vsynch) allows it to take a break between frame refreshes. BTW, I think we've actually already gone over this in this thread 
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