Best GPU
i want to by Graphic card AMD  MSI or Asus is best choice ?????
Neither. Smile Go NVIDIA, 10xx series (1070, 1080, 1080Ti). If you get Founder's Edition (recommended), the vendor doesn't matter, because they all follow the same NVIDIA spec.
so it is meen AMD GPU mor than better Nvidia
for hashcat
I think this was already covered fairly well:

(06-14-2017, 08:53 PM)royce Wrote: Go NVIDIA, 10xx series (1070, 1080, 1080Ti).
hashcat, 1080ti.
btc miner, 1080ti or upper or given up.
ethereum miner (performance), 1070.
ethereum miner (power/performance), rx470
AMD RX 580??????
Stop talking about mining. This is Hashcat.