... 80gig hdd or bigger ....
You can get Nvidia cards but they cost more..........
80 GB are not enough. Get at least 320 GB if you want to try different mining software (for different coins ie).
Nvidia cost more and are (for most coins) slower than AMD GPUs, although they use less power ...
Even 40gig is enough....I use em & they work fine mining ANY coin.You just can't keep wallets on em........
I said 80gig cause most folks will buy new hdds & they are the most to choose from,I get mine free,used scrap so its no problem to me
Most wallets are 30gig each,some are only 5gig,some are 60gig,depends on the coin,so you will need much bigger drive if you store wallets........