ViewPerf 7 by GPC is mainly used by the industry as a standard tool for testing OpenGL performance within professional applications.It is well-known that graphic card manufacturers like ATI, 3Dlabs or NVIDIA do optimize their drivers to score better in different benchmarks but up to now it might be unkown that ViewPerf 7.1.1 does not deliver correct results or at least has flaws in some of the tests. This does not involve benchmarks between different professional cards but the results of the cheaper gaming cards.