Dynamically limited VSync on the AMD cards
The freeware tool Radeon Pro can solve the micro-stutter problem quite elegantly if you first create a suitable profile for the game of your choice. From our point of view, in many cases the most favorable results are achieved by first determining the achievable average frame rates with a suitable tool such as Fraps. If these are significantly higher than the monitor frequency, then it is usually sensible to provide the monitor frequency as a limitation in spite of everything and to select dynamic adjustment. Otherwise, setting the limiting frequency to the value of the average frame rates or slightly below has proven to be quite useful.
Since the EVGA GTX 690 managed about 10 fps less in the game at the maximum resolutions and settings, we ran the HIS 7970 X2 once with the actually achievable 50 fps and once with a limit to the 40 fps analogous to the GTX 690:
Limitation to 50 fps
Limitation to 40 fps
Except for some reload jerks during the benchmark’s scene changes and a few frame drops, the tool’s performance cannot be described in simple words. The reproduction is what one likes to call “smooth” and ideally even more balanced than what the single card brings to the monitor. Compared to Nvidia’s solution, this software approach is a bit more complicated for the user, since you have to create a profile for every game, but considering the fundamental improvement, you will surely want to put up with this circumstance. It is not a world sensation, but at least a small sensation, because in the end (almost) nothing jerked. Thus, the author deserves a thick praise for this very useful software!
- 1 - Introduction and overview
- 2 - The challenger: HIS 7970 X2
- 3 - The efficient: EVGA GTX 690
- 4 - The beauty: PowerColor 7990 Devil 13
- 5 - Synthetic benchmarks
- 6 - Gaming benchmarks (Catalyst 12.11)
- 7 - Micro stuttering: the current situation
- 8 - Micro stuttering: AFR render methods
- 9 - Micro stuttering: adaptive VSync (Nvidia)
- 10 - Micro stuttering: dynamic VSync (AMD)
- 11 - Power consumption and temperatures
- 12 - Fan speed and noise (with videos)
- 13 - Summary and conclusion
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