Next under CrossfireX we used CPCC to force 16xMSAA and 16XEQAA, with 16xAF added as well and Morphological Anti-Aliasing performance, with 2xMSAA in game set and 16xAF.įorcing 16xMSAA and 16圎QAA doesn't have much effect with two cards, showing that the override is ineffective although it is doing something to the image, just not 16xAA samples worth. Applying EDAA is a ~20-25% performance hit vs. Enhancing the image using EQAA costs between 9 to 9.5% against MSAA.ĮDAA drops the performance the most, although the performance drop from 4圎DAA to 8圎DAA (12xMSAA to 24xMSAA) is smaller than the EQAA one. Two cards are in the 95-85FPS average, depending on AA level, plenty of performance, and three GPUs is still well over 120FPS (around the 130FPS mark with 8圎QAA).
1920X1080 DIRT 3 PRO
Two GPUs can't quite hit the magic 120FPS average but instead deliver over 90 at 8xMSAA three GPUs is enough for 120Hz vSync, easily, with 8xMSAA.ĮQAA starts to make the Cayman Pro core work harder, pushing a single card down towards 45FPS average - still playable and fun, but not optimal for competitive play. Best of all, the 8xMSAA performance of a single card is near the 60FPS average mark, delivering a fun and enjoyable high quality visual experience. The hit decreases as more cards are added, but only slightly (~9% for 2x and 3x GPUs).Ĭrossfire scaling isn't bad at all, 75% increase in performance adding 1 GPU and adding two GPUs gives 167% increase, which is a 50% improvement moving from two to three cards. Mouse over data points to see details.Īs you can see the performance hit for 4xAA and 8xAA is pretty constant and quite low - only 7FPS (~11%) hit for a single 6950 at 1080p. In game AA was varied between 0xAA, 4xAA and 8xAA with MSAA/Box, EQAA and EDAA anti-aliasing modes selected in Catalyst Pro Control Center (CPCC). Results of 1920x1080 in DirectX 11 with ultra preset and varying levels and types of AA.įirst we have single, dual, and triple CrossfireX performance, using stock clocks. Date: August 15th, 2011 Performance AnalysisĪverage frames per second (FPS) results from the Adrenaline Racing benchmark tool, Finland stage.
0 kommentar(er)
