I am mining for a hobby so please do critique me for mining with a GPU (I know GPU mining is dead but I want to try it anyway), but I have 2 GPU Radeon R9 290 and 2 GPU Radeon R9 290x both made by Gigabyte, Can I put both of these into one mother board and mine or do I have to connect them to two different mother boards because they are different cards? Simply put can a person build a mining rig with two different GPUs?
Also on the motherboard is there any difference in speed between a 3.0 and a 2.0 connection for a pci connection?
Thanks in advance
One advice though: give yourself a favor: switch to mining litecoins instead of bitcoins. You can exchange them later to bitcoins if you wish, but mining litecoins is ~26 times more effective than mining bitcoins. I am sorry that I switched to litecoins late, just wasted a lot of time.
You will need just change a little bit the command line or config file of your miner.