For NVIDIA cards we used the most recent ForceWare 71.24 drivers, and for ATI cards - Catalyst 4.12 WHQL.
Synthetic benchmarks
Gaming benchmarks
OpenGL tests
Overclocking
In overclocking, as usual, we used Riva Tuner. With additional blowing of cards by the PC housing fan and through replacing the standard thermal interface with "Alsyl-3", we were able to attain the following results for each of the cards under benchmarking: