It's always nice when they run as advertised, the one card I've got there in my pictures is a Sapphire R9 270X OC 4GB and it's pretty much a set and forget. I usually get about a 2% error rate or less, I don't think that's too bad. I also get 444.0Kh/s out of it which puts me about the middle of the 270X's on the Mining Hardware chart, so I'm happy. I hope these new cards coming Monday live up to the expectations I've built up in my mind for them.
Which brand 270 would you recommend? I was thinking of getting the MSI ones.
I hate to kill your enthusiasm but when you mine vert your hash rate is pretty much cut in half If you're going to mine vert, make sure to use vertminer 0.5.3 and not the one in the OP. You also have to have way more system RAM and lower GPU engine and concurrency settings.