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Old 11-26-05, 11:44 PM   #1
Big Ev
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Default How accurate is Fraps fps rating?

Hey,

I've been doing some various experiments with Fraps, see my in-game performance and I just wanted to know how accurate its readings are. I am playing CoD2 on the rig listed in my sig and the frame rate jumps around b/w 15-40 fps on these settings:

1600x1200
Refresh Rate: 85
4x AA
8x AF
Soften Smoke Edges: Everything
Dynamic Lights: High
Bodies Shown: Insane
All Models: Extra

Basically everything maxed out. Problem is, even when the Fraps counter says I'm @15-18fps the game appears to run smooth as silk. There is no choppiness of slowdown I notice. I know for a fact when animation dips below 24fps, it should be noticable to the human eye.

Maybe my eyes are just that bad?

Maybe it has something to do with the dual core?
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Old 11-27-05, 12:55 AM   #2
Sazar
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Default Re: How accurate is Fraps fps rating?

It is pretty accurate. Keep in mind that because it is polling data, you might have a +/- discrepency but it is relatively accurate.

Typically you might not notice a drop to ~15fps or so that much unless you are in a fire fight and moving around at more than a crawl. BF2 does not take advantage of your 2nd core either so dual-core would not assist.. What I would suggest is to set affinity to your second core for FRAPS so it reduces any extra drops you might be experiencing.

I can notice clearly while playing cs:s and having extra choke on some servers absolutely kills frame-rate and it drops from 100-150 down to about 15-20 and I can tell very clearly.

If you are running around and still don't notice a drop in frame-rate, perhaps you really are getting a mis-reading.
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Old 11-27-05, 03:34 AM   #3
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Default Re: How accurate is Fraps fps rating?

Thank you for the response. I'll deifnitely try your recommendations
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Old 11-27-05, 03:36 PM   #4
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Default Re: How accurate is Fraps fps rating?

You can also compare it with the built-in framerate counter. Use cg_drawfps 1 and see how it compares to fraps (that is, run both). A lot of games have their own framerate counter and from what I've seen, they usually match pretty well.
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Old 11-27-05, 03:38 PM   #5
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Default Re: How accurate is Fraps fps rating?

Ive ran Fraps along side the ingame FPS counter in Quake4, and both give the same readings, just fyi

edit: OWA beat me to it
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Old 11-27-05, 09:15 PM   #6
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Default Re: How accurate is Fraps fps rating?

fraps works with openGL ?
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Old 11-28-05, 08:50 AM   #7
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Default Re: How accurate is Fraps fps rating?

Yes, it works with both.
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Old 12-11-05, 09:29 AM   #8
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Default Re: How accurate is Fraps fps rating?

Quote:
I know for a fact when animation dips below 24fps
Depends on the person. I can notice large drops in framerate. However, back on my first Voodoo1, while setting the in-game settings for Ultim@te Race Pro, I noticed that going down 1 frame per second at a time, 13fps was the lowest framerate that still appeared smooth to me. There was just a huge noticable difference between 12 and 13fps for me.

I'm not saying I'd enjoy a racer at 13fps. However, it would be TOLERABLE at 13fps as long as it never went above or below that. Any deviance at that framerate was noticable and annoying.
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