Our new Indie Games subforum is now open for business in G&T. Go and check it out, you might land a code for a free game. If you're developing an indie game and want to post about it, follow these directions. If you don't, he'll break your legs! Hahaha! Seriously though.
Our rules have been updated and given their own forum. Go and look at them! They are nice, and there may be new ones that you didn't know about! Hooray for rules! Hooray for The System! Hooray for Conforming!
So I got a second 5770, making a pair for crossfire. I have it running and so far everything seems okay.
I do have one concern, though: It turns out my 2nd pci-e 16x slot only runs at 4x when the first one is in use (god damn you motherboard marketing department!). Is this slow enough to make crossfire not worthwhile? As far as I know, I can't switch both slots into 8x mode, its stuck with one 16x and one 4x.
Edit: I assume it doesn't work well in Source engine games as L4D2 and Alien Swarm both behave erratically.
Edit 2: Alright, I guess crossfire isn't for me. It seems most of my games have trouble with it.
Edit 3: So it turns out crossfire works fine if I disable my second and third monitors, or use eyefinity mode. That really sucks because eyefinity isn't great in a lot of games (ui is at the edge of my vision) and having to disable my extra monitors while gaming kind of defeats the purpose of having them.