If you use an AMD CPU and NVIDIA GPU it will be fine. Any card with any processor will work. I would reccomend the AMD FX 8350 because you wanted AMD and it has 8 cores at 4.0 GHz which is good. For your GPU go with the GeForce GTX 980 it is one of the better cards out there that won't break the bank. Then go with the MSI 970 GAMING Mobo and for an aftermarket cooler go with the Coolermaster Hyper 212 EVO. 16 GB of any RAM. A 240 GB SSD and a 2 TB HDD. With a 750 Watt PSU should cost about. 1090 US dollars which is just about your budget. A little over though. But it is a perfect video editing workstation.