I assembly a high-performance system for GPU password recovery based on AMD video cards. What shall I focuse my attention on?

Yes, AMD is better for password recovery. But there are two moments:

1. Load on GPU reaches 99% when our software runs. It means that the video card significantly heats up and a high-quality power supply is required. It should be taken into accont for system construction;
2. Dual GPU from AMD, such as HD 6990/7990  are detected by our software as two video cards. The demo versions will apply just one GPU of the pair.