If money is no object, then upgrade to the Radeon 4870X2. If money is an object, then still upgrade the video and downgrade something else. For example:

- 12GB RAM is way overkill for 5 instances of WoW unless you want to do video editing or something at the same time. 500MB per instance should be plenty. If you chose 12GB for triple channel memory, know that A) the bandwidth triple channel provides will go unused in today's systems/applications when compared to dual channel, and B) You don't necessarily need a multiple of 3GB to achieve it. I have a Gigabyte GA-EX58-UD4 board with 8GB running triple channel, for example. That configuration requires 4 sticks of RAM of any size.

- You could save a lot on the CPU by downgrading to a Core i7 920 and probably never notice a difference.

Take some of those dollars and get a better video card instead.