Micro stuttering may destroy the performance gains from current multi-GPU tech

jmke · 9th February 2008, 13:32

multi-GPU systems often do not succeed in displaying regular distributed frames; it comes to large time intervals between individual images - "micro stuttering" - despite supposedly fluid frame rates. One example: frame 1 is followed by frame 2 after 10 milliseconds, which corresponds to a cadence of 100 Fps. Frame 3, however, is to be seen only 40 milliseconds afterwards, followed by frame 4 after 10 ms.

The result is disastrous: The subjective frame rate of a multi-GPU system is in this extreme case below a single card, although the displayed Fps are higher. This behavior is primarily critical at low frame rates, such as the aforementioned 30 Fps. The less Fps, the greater the possible intervals between them and a regular distribution gets even more important.

http://www.pcgameshardware.de/?article_id=631668

9th February 2008, 13:32	#1
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 79,021	Micro stuttering may destroy the performance gains from current multi-GPU tech multi-GPU systems often do not succeed in displaying regular distributed frames; it comes to large time intervals between individual images - "micro stuttering" - despite supposedly fluid frame rates. One example: frame 1 is followed by frame 2 after 10 milliseconds, which corresponds to a cadence of 100 Fps. Frame 3, however, is to be seen only 40 milliseconds afterwards, followed by frame 4 after 10 ms. The result is disastrous: The subjective frame rate of a multi-GPU system is in this extreme case below a single card, although the displayed Fps are higher. This behavior is primarily critical at low frame rates, such as the aforementioned 30 Fps. The less Fps, the greater the possible intervals between them and a regular distribution gets even more important. http://www.pcgameshardware.de/?article_id=631668 __________________

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