gamerk316 :
In other news: Mantle BF4 Frame Pacing, yay!
http://www.pcper.com/reviews/Graphics-Cards/Frame-Rating-Battlefield-4-Mantle-CrossFire-Early-Performance-FCAT/High-End-C
What is especially worth noting is the consistency of frame times for Mantle, but is doing so at the cost of absolute FPS (observed and real). The same behavior occurs at 1440, even if the two results are now almost identical due to other bottlenecks.
Now for AMD:
Things flip here: Mantle CFX becomes the fastest config, but CFX DX11 becomes the SLOWEST, even slower then a single card running DX11. Things like better at 1440 as the CFX DX11 comes in second, but is closer to the single card solutions then CFX mantle. Likely the same issue as at 1080. Something is clearly mucked with the driver here.
Even more interesting are the AMD vs Intel result sets:
Intel is faster with DX, AMD is faster with Mantle. Which should NOT be the case; both CPU's should benefit to some degree.
I really don't know what to make of these results; they don't make sense on multiple fronts. But combine that with AMD's very poor DX11 results in Thief, we now have TWO games that use Mantle where it looks like AMD's D3D driver is performing worse then it should.
And before someone says "there's the anti-AMD bias again", answer me why AMD's DX11 performance SUCKS in Thief, or why BF4 DX11 CFX results look so poor.
http://www.pcper.com/reviews/Graphics-Cards/Frame-Rating-Battlefield-4-Mantle-CrossFire-Early-Performance-FCAT/High-End-C
![BF4_1920x1080_OFPS_0.png](/proxy.php?image=http%3A%2F%2Fcdn.pcper.com%2Ffiles%2Fimagecache%2Farticle_max_width%2Freview%2F2014-04-02%2FBF4_1920x1080_OFPS_0.png&hash=b964d4f2d1b08ce928f6a938ecfcae41)
![BF4_1920x1080_PLOT_0.png](/proxy.php?image=http%3A%2F%2Fcdn.pcper.com%2Ffiles%2Fimagecache%2Farticle_max_width%2Freview%2F2014-04-02%2FBF4_1920x1080_PLOT_0.png&hash=f0303bf02a95e148a0653c0e8b8b1221)
What is especially worth noting is the consistency of frame times for Mantle, but is doing so at the cost of absolute FPS (observed and real). The same behavior occurs at 1440, even if the two results are now almost identical due to other bottlenecks.
Now for AMD:
![BF4_1920x1080_OFPS_1.png](/proxy.php?image=http%3A%2F%2Fcdn.pcper.com%2Ffiles%2Fimagecache%2Farticle_max_width%2Freview%2F2014-04-02%2FBF4_1920x1080_OFPS_1.png&hash=f5178bc6b03ab6970cad76f482a120d2)
![BF4_1920x1080_PLOT_1.png](/proxy.php?image=http%3A%2F%2Fcdn.pcper.com%2Ffiles%2Fimagecache%2Farticle_max_width%2Freview%2F2014-04-02%2FBF4_1920x1080_PLOT_1.png&hash=0dfe244fae718c14ab5ee472e915dd4b)
Things flip here: Mantle CFX becomes the fastest config, but CFX DX11 becomes the SLOWEST, even slower then a single card running DX11. Things like better at 1440 as the CFX DX11 comes in second, but is closer to the single card solutions then CFX mantle. Likely the same issue as at 1080. Something is clearly mucked with the driver here.
Even more interesting are the AMD vs Intel result sets:
![BF4_1920x1080_OFPS_2.png](/proxy.php?image=http%3A%2F%2Fcdn.pcper.com%2Ffiles%2Fimagecache%2Farticle_max_width%2Freview%2F2014-04-02%2FBF4_1920x1080_OFPS_2.png&hash=61bdd8a9f3fd84579cd605d15b396acc)
Intel is faster with DX, AMD is faster with Mantle. Which should NOT be the case; both CPU's should benefit to some degree.
I really don't know what to make of these results; they don't make sense on multiple fronts. But combine that with AMD's very poor DX11 results in Thief, we now have TWO games that use Mantle where it looks like AMD's D3D driver is performing worse then it should.
And before someone says "there's the anti-AMD bias again", answer me why AMD's DX11 performance SUCKS in Thief, or why BF4 DX11 CFX results look so poor.
I am not sure if you are complaining or not? My 2cents is I love the flatness of that graph, BF4 must be a dream to play at guaranteed FPS locked without fluctuations, also getting better the longer it goes into gameplay by the rise in FPS. mantle supported drivers will surely increase mantle performance over time but I would like to see other AMD cards and Nvidia cards. I can tell you that my GTX670 is massacred by BF4 with frame variances deemed extreme can go from 120 down to 45 up to 80 that with a Sandy bridge which quite honestly don't believe is the performance penalty. Just for the record my settings are:
24" LED 1080P - Medium textures, High Meshing, High Post Processing, No MSAA or HBAO/SSAO so in terms nothing that kills performance or shouldn't.