So I should connect my monitor to the 5850? Or that's not important?
Also I've tried to calculate the PSU I'd need with different tools and here are the results:
1. First says I'd need 440~510W
2. Second says (the newegg one) I'd need: 740W
Can someone help me with the watts as I'm not sure that I'd be able to buy a new PSU too.
And Master Chief gets it. The 5850 won't downclock. It will, in fact, run at it's own speed so you should expect CF to be better with it than with 2 5830's. It should fall between CF 5830 and CF 5850. Let's call it CF 5840 speeds. I actually ran this test myself back in the 4800 days with a 4850 and a 4830.