You're likely going to need USB risers. Even if that mother board has 4*PCIe16x INPUTS you'll want to spread them out for heat reasons. The risers will cost 8 USD each.

The harddrivedisk can be a flash card or usb drive it doesn't matter. There are 120gigabite drives that show up on sale for 40 USD which works well

Hi I'm a long term lurker but I have a question I hope you can help with. What are your thoughts on the rx470 Sapphire Pulse 8gb ram gpu 11266-66-20G, worth buying?

Apologies if there's a dedicated thread for this, but I saw some posts discussing the 4gb DAG file and I'm searching for replacement GPUs, everything I own is 2gb and 4gb