If you want to spend the money you may as well go for the i7. You should be able to get at least 3.8 on it if not higher. There isnt much of a gain between a 285 and a 260 but it is a nice card.
Originally Posted by ZealotKi11er
Well to tell the truth i would not waist money now in these small upgrades which at most will give u no more then 20% increase in performance a lot less mosny in your wallet.
Originally Posted by hoth17
go with the q9650. You will be over to oc it to 4ghz, and sli 260's are still a great setup.
edit: what is the point of going form a q9550 to a q9650? what kind of gains are you looking for?
Originally Posted by Robilar
A Q9650 is guaranteed to give you 4ghz on air cooling. To get an i7 to do 4ghz on air, hyperthreading should be disabled to keep temps down.
I had the same decision to make and haven't regretted going with the Q9650. As mentioned above ram needs to be changed and the i7 boards are pricey.