hello everyone!

I'm building my first rig for mining monero. i started mining after i discovered this thread. congrats Mattthev for the tutorial. i am using XMR-STAK 2.1 Github - Official to mine whith my laptop...only to see how this works. Now i want to buy some video cards to build a rig, but i am not decided. i have to choose between 3 cards:

1. Sapphire AMD Radeon RX470 MINING QUAD UEFI 4GB (i read this one has samsung memory)
2. XFX RX 470 8GB
3. Sapphire Radeon RX 570 NITRO+ 8GB

i am pretty sure that i am going to overclock them...
Can you put them in the order starting with the best? and, if it's not to much, can you tell me what is the maximum hash rate for each one, whit standard bios and moded one?

thanks a lot!
i'll be grateful for your help!