I'm currently mining with a 4890 @100MHash/s, abysmal I know. So I am looking at expanding my setup. My current motherboard only has one PCIe slot that the 4890 is occupying. I was thinking either just replacing it with a 6970 to get 400MHash/s (my goal BTW, at least initially) or replacing the motherboard with one that has 3 PCIe's and grabbing a 6870. Use both the 6870 and 4890 to mine and I should end up with around the same 400MHash/s rate. Thoughts on which to go with? Or if you have a better idea I'm open to suggestions. Thanks!
Shows you can get 108mh/s with that 4890. Just replace it.