You can click through the buttons below to see the frame time distributions from the different cards captured with both Fraps and FCAT. Although the results from these tools tend to correlate pretty closely most of the time, you will see some variance because, in most games, we can't use both tools simultaneously. So what you're seeing in the plots is the result from a single test run from each tool. Naturally, those test sessions will vary a bit, since we're playing the game manually. The other graphs below are based on three full test runs from each tool, with the median result shown.
I tried to pick some nicely playable settings for this round of Crysis 3 gameplay testing. The frame times are generally quite low for each of the cards, although there are occasional spikes in both the Fraps and FCAT plots. You'll feel these slowdowns while playing. They happen as the test run is first starting and then a little later when I'm shootin' dudes with exploding arrows. As you can see, the spikes tend to be a bit larger on the GeForces than on the Radeon HD 7970.
Interesting. The FPS average sorts the four cards pretty straightforwardly, with the GTX 780 just trailing the Titan while the 7970 and GTX 680 are deadlocked. The latency-focused 99th percentile frame time tells a similar story, but the FCAT frame times are consistently lower than in Fraps. That's because some of the variance in frame dispatch, near where Fraps measures, is smoothed out by buffering by the time the frames reach the display, where FCAT measures. Even with the difference between Fraps and FCAT, they still agree on the basic sorting of cards.
The 99th percentile frame time is just one point on the overall latency curve. I've shown a larger section of that curve above, focusing on the last 10% of frames rendered. You can see where the 99th percentile point is and how very close the different cards tend to be overall.
This last metric measures "badness"—that is, time spent working on really high-latency frames. Here, the Radeon HD 7970's smaller spikes at those trouble points in the test run give it the edge. AMD's drivers and GPU combine to produce a smoother gaming experience in this case.
|TR's 2017 Christmas giveaway: eight days left and counting||4|
|Rumor: Ryzen 2 set for Q1 2018 and a Fenghuang APU breaks cover||20|
|MSI gives Radeon RX Vega cards an Air Boost||15|
|Corsair's latest SO-DIMM kit takes 32 GB of DDR4 to 4000 MT/s||7|
|Report: Intel Inside co-marketing program will get a budget cut||30|
|Gingerbread House Day Shortbread||17|
|iMac Pro details and release date come into focus||49|
|Radeon Software Adrenalin Edition: an overview||26|
|Tuesday deals: NVMe storage, a GeForce GTX 1080 Ti, and more||9|
|Full disclosure: while I work for Intel; the opinions I express here are my own I think I understanding the issue you ran into. For the Braswell platf...||+35|