Hey everyone. I'm about to build my first mining rig this week, and have several hardware related questions.
1. Is anyone currently using multiple
MSI R9 280x cards with
ASRock 970 Extreme 4 motherboard? I've read that they should be compatible, but I've also read some reports about people having issues with compatibility.
2. Most motherboards which have multiple PCI-e slots, provide decreasing speeds like 1 slot- x16, 1 slot- x8, 1 slot- x4 etc. Does this impact mining performance? I have yet to come across any motherboard which provides x16 speed on all slots.
3. How safe is flashing a GPU's BIOS? Apparently, its required for under-volting cards when working on linux, but I'm concerned about the possibility of killing the cards.
4. Has anyone ever used Add2PSU (
http://www.add2psu.com/) to connect multiple PSUs in one rig? Are these things safe to use? A 1200W PSU is very expensive, and may not support 4 to 5 cards, however, connecting two 860W PSUs can definitely solve the problem.