What GPU and CPU is ideal for Penetration testing role job?

[Srazario]

I can't speak to CPU (other than "generally faster is better" and "at least one core per GPU") or RAM (other than "more than 32GB for analyzing big wordlists").

For density (packing a good amount of throughput into a single chassis for the price vs power consumption), the GTX 1080 Tis - the Founders Edition made to OEM spec, not the gaming ones - are popular. FE/reference cards are strongly preferred for cracking.

Thanks for replying. So the more CUDA core the GPU have the better for password cracking?.  I also heard that AMD is better for cracking password than NVIDIA?