Amd recently has released some great CPU with high cores and low prices. About 305$ you can get an editing beast with 8 cores @3.7 GHz. This cpu will be enough to edit smoothly. There are more expensive cpu and higher cores or higher frequencies but to be honest we don't need real time exporting. You can have a break and drink a coffee while exporting your video. Memory is important. Lower the size the more time it takes to do task. I recommend 16GB DDR4. (2400Mhz or more is great also). That amount will make switching between applications easier and faster. So right now we spent 305 dollars for cpu and 150 for memory (RAM). Sum is 455 $. Lets suppose you are upgrading your system so you have some hard drives and some ssd maybe. I love SSDs for system and as a drive for footages. For the system Samsung EVO 970 will do a great job for 90$ ( Sata m.2 250GB @Read speed up to 3400 MB/s). Asus x470 Pro is a great mainboard for 160$. Also find power supply more than 500w. I recommen