Advice for a Davinci 12.5.5 Editing System

Hello,

I would like to use the free version of DaVinci Resolve version 12.5.5 to edit YouTube videos. Footage would be a combination of 1080P HD and 4K. Can someone please offer some advice on the following HP PC systems? Will I be able to edit without any issues?

Intel® Core™ i7-6700K Processor at 4.0GHz
32GB DDR4 (4-DIMM) RAM
3TB 7200RPM SATA Hard Drive + 256GB Solid State Drive
Microsoft® Windows 10
8GB NVIDIA GeForce GTX 1070 Graphics

Intel® Core™ i7-6700K Processor at 4.0GHz
32GB DDR4 (4-DIMM) RAM
2TB 7200RPM SATA Hard Drive + 256GB Solid State Drive
Microsoft® Windows 10
8GB AMD Radeon RX 480 Graphics

If you had a choice which of these three graphics cards would you choose and why - 1. 8GB AMD Radeon RX 480 Graphics 2. 4GB NVIDIA GeForce GTX 750 Ti Graphics and 3. 8GB NVIDIA GeForce GTX 1070 Graphics?

Thanks!