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VISTA SLI and Crossfire Hotfix kb936710

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On a Windows Vista-based computer that has multiple graphics cards (GPUs), the computer does not use the secondary GPU


Consider the following scenario:

• You have a Windows Vista-based computer that uses a high-performance video card.

• This video card uses multiple graphics processing units (GPUs).

In this scenario, the computer's graphics performance seems to indicate that only a single GPU is being used.


This problem occurs because the operating system does not forward driver-render requests to the secondary GPU.


Hotfix information

A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only to systems that are experiencing this specific problem.

This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

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