Nvidia / AMD......So what is up with this ?

[toyota]

Thats a huge leap in performance, would explain your IQ/smoothness. heh

Adaptive vsync is the only other explaination i can think of. It dynamically adjust the scene IQ to minimize frame rate drops during intensive parts and maintains more smoothness.

um no it doesn't. all adaptive vsync does is turn off vsync if you drop below your refresh rate.

 

[zebrax2]

Is it happening for other games? It could possibly be a bug in their drivers

 

[Silverforce11]

um no it doesn't. all adaptive vsync does is turn off vsync if you drop below your refresh rate.

Really? My mistake, i got that from the initial release and ppl discussing its dynamic IQ adjustments.

Well, OP's issue, no idea.

 

[BrightCandle]

How exactly would I do this ? I do have a paid license for FRAPS.

Edit: Nevermind, was an easy find in FRAPS. Not sure why, But I don't think I have ever noticed that option in there before.

In fraps you have the option to record and you can choose to record the average FPS amoung other options, one of which is the frame times. Then when in game and its choppy you start the record and run it for a time period and it will produce a file with lots and lots of times in it, all measured in milliseconds.

Just copy/paste/import the data into excel/libre Calc and graph the points. You will see immediately any lines that stick up or down too far.

Do it for both systems, compare the graphs and you should see the difference between the two. Its a much more accurate way to paint a picture of performance, because we perceive uneven frame times very poorly even when the average is excellent.

If you need more details about what to look for take a look at techreport: http://techreport.com/review/21516/inside-the-second-a-new-look-at-game-benchmarking/11

My experience of the AMD 7970's in crossfire and single cards is that it isn't as smooth, that frame times differ more than NVidia's cards and its the difference of being happy at only 60fps all the way down to 45fps on NVidia. So while the AMD cards may perform better the difference doesn't compensate for the frame time variation that ruins the feeling of motion, its been there since the start and remains in the latest drivers. But before you get to that point at least confirm this is the issue.

 

[bononos]

......

Both cards, I used 4xaa and 16xaf. Both with vsync.
......

Try the 6870 without vsync. Vsync could be the cause of what you are seeing (stuttering) if the framerates aren't high enough (that is at least around your refresh rate). Nvidia has the advantage of adaptive vsync here.

 

[DominionSeraph]

Thats a huge leap in performance, would explain your IQ/smoothness. heh

??
4870 is 5770 level. 4890 is around 768MB GTX 460/GTX 460.

 

[GaiaHunter]

Shouldn't be many differences in rendering time unless if there is a specific driver bug with that game.

All taken from techreport.
Whiterun is Skyrim and Fear no evil is BF3.

 

[BrightCandle]

I doubt this is an peak frame time problem. The feeling of continuous poor motion tends to come from uneven frame times not occasional peaks. We will see soon once the op gets back with results and graphs.

 

[GaiaHunter]

I doubt this is an peak frame time problem. The feeling of continuous poor motion tends to come from uneven frame times not occasional peaks. We will see soon once the op gets back with results and graphs.

That is why I posted the 99th percentile.

It already removes the outlier peaks.

(this are benches from november 2011 btw, so there might be driver speed changes).

 

[BD231]

Thats a huge leap in performance, would explain your IQ/smoothness. heh

Adaptive vsync is the only other explaination i can think of. It dynamically adjust the scene IQ to minimize frame rate drops during intensive parts and maintains more smoothness.

Thing is, I didn't automatically start playing games that required more power. Tom Clancys Hawx for instance, got close to 100 FPS on my 4890? The image quality was night and day vs the two cards, almost to the point where I thought there might have been something very wrong with my 4890?

In my case it was very simple to relate. It was like looking at 2 identical image's, but one being a grainy image (amd) and the other glassy smooth (nvidia). It blew my mind, and made old games look new all while using the same monitor.

I pointed that out here a long time ago but nobody could relate so I figured it might of just been me. As time went on IQ became a big topic and at the start nVidia had the upper hand while AMD was deliberately lowering image quality for performance gains. Given that lately reviewers rarely, if ever, comment on image quality one would assume there's no difference.

Its just like how people used to say AMD cpu's had more " smoothness " while gaming, I saw that same effect going nvidia. Again I've not tried the 7000 series, just something I noticed a few generations back.