Hey, I just got into the mining game and came here for some advice. I'm part of bitminer and contribute about 0.4Ghps, so as you can see am not to worried about profit, and consider myself very casual. I'm running 2 xfire'd 6790's oc'd to 920/1120 Mhz. I'm curious to know if these numbers add up right, and if I am harnessing all the power of my GPU's. Also, would it be beneficial to invest in USB errupters to boost my hash rate, or are there any other viable solutions? A new graphics card set up could also be an option, but I'm not sure how much gain in hash rate I would get. Any feed back is greatly appreciated!
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgur.com%2F8wawJ9c.png&t=664&c=71wHikX3AUgqnw)