2gh is nice. I can't cool my garage enough to get to 2gh. I have 2 x 30 amp 240 volt lines so I can do over 10kwatts of power. I just won't be able to cool that off.
My goal for the winter is 32 cards and about 700mh. Cards 26 and 27 arrive next week.
I like a few cards this one is decent http://www.newegg.com/Product/Product.aspx?Item=N82E16814137024&cm_re=msi_rx_470-_-14-137-024-_-Product
Yeah, I have about 300a usable, but I'm only using a bit of it... One big advantage of living in Arizona is that evap works REALLY well, so for ~500w I can drop 10-20f off ambient.
So what hash rate are you getting from the MSI 4G (ideally using claymore)? I had considered picking those up, especially at the price - the place I buy most my cards from now is jet.com:
https://jet.com/product/MSI-RX-470-GAMING-X-4G-Radeon-RX-470-Graphic-Card-125-GHz-Boost-Clock-4-GB-GDDR5/e63f1e7cb1b645c6ad7b36c9dba862e2If you order 3, and opt out of returns, you can get it for $185, plus free shipping and no tax. If it's your first order, using the coupon TRIPLE15, and you can knock another $30 off the order (if you buy 3 cards). Really a smoking deal, and the funny thing is when the boxes arrive, they're from Newegg - pretty stupid really on Newegg's part to give better deals through 3rd parties than on their own site.