Towards the end of June I published AMD RadeonSI Gallium3D benchmarks, the open-source Linux graphics driver supporting the Radeon HD 7000/8000 series hardware on Linux. While the alternative to the Catalyst driver can accelerate OpenGL, it's very slow. Open-source driver benchmarks were shown in that article compared to older generations of AMD Radeon hardware backed by the mature R600 Gallium3D driver. In this article are benchmarks comparing the open-source "RadeonSI" driver to the proprietary AMD Catalyst GPU driver on the Radeon HD 7850/7950 graphics cards. As an additional driver reference point were also Radeon HD 7950 Cayman results; all testing happened from Fedora 19 Linux.