Siege of Shanghai with 64 playersSystem Specs
64 players, Ultra Details (Core i7 3770K, 16 GB DDR3-1333, Radeon R9 290X@1.000 / 2500 MHz, Windows 8.1 x64, Catalyst 14.1 Beta)
Warning: Spoiler! (Click to show)
To measure the multi-player mode, costs especially time - despite the used SSD for OS and Battlefield 4: The map and all the 60 + players must be loaded (we measure on always the same server with at least 60 players) and the Spawn needs to an appropriate Agent. This makes it not fail, we are playing on the map "Siege of Shanghai" on the part of Americans and grab us in their basic personal watercraft.
Our test scene: a jetski ride across the BF4-Map Siege of Shanghai
High performance gains in CPU limit
With this we go to the flag point A passing along the promenade, swing on the third pier to the right in the direction flag point C and continue on the intact skyscrapers passing under the bridge between the flag points C and D. Because of the battle around us explodes sporadically a tank or a helicopter roars past - therefore we submit five passages in order to obtain a representative FPS value and leave passages that vary widely, outside before.
In the graphics limit the 4K resolution (3,840 x 2,160 pixels) overloaded the Mantle API the Radeon R9 290X little better, the average frame rate increases by 7 percent. In common with many players 1080p resolution (without MSAA) our test scene is already almost continuously CPU limited, the frame rate under Mantle is, therefore, a whopping 76 percent higher than in Direct3D - with 4x MSAA, there are still up 35 percent.
Are most marked differences at a resolution of 1280 x 720 pixels: Video card must be here throughout on data from the processor to wait, so the speed is increased by 78 percent. Particularly noteworthy is the minimum frame rate, which is significantly higher among Mantle as under Direct3D. This also means that users of Crossfire and 120-Hz screens, the Radeon-teams have been limited by the CPU, its performance can now take full advantage.
The frametimes also demonstrate that the images are output not only faster but also more evenly. In the same nominal frame rate is thus the feel somewhat improved. Particularly impressive are the values taking account of Windows 8.1 and Direct3D 11.1, since 7 and D3D11.0 benefited Battlefield 4 of both compared to Windows.