The Most Comprehensive AMD Radeon Linux Graphics Comparison
Written by Michael Larabel in Graphics Cards on 19 September 2011. Page 36 of 38. 86 Comments

When running Warsow and monitoring the system metrics, the CPU usage remained much lower with the open-source driver over Catalyst. This CPU usage difference is perhaps due to a bottleneck in the driver code and needing to wait on the GPU to finish slowly execute its operations. The CPU usage difference was also similar when running Nexuiz.

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