But is the increase in performance when overclocking the 7950 worth the extra £150-£200.
This is true, but I'm knocking on the door or 7970 and 680 owners, and beating some of them. And as always, a single card producing the same performance over multiple cards is always the best option.
I do agree about the price though, I paid £260 for mine, brand new. I wouldn't have paid retail, I'd have stuck with my 5850 CF till prices come down.

