Not an upgrade? Have you even seen the leaked stats.for the 88xx series? ~25% gains across the board even with better power management.
Yes I have seen them. Power draw will like 5% less. 7950 1792 shaders -> 8x50 2048 shaders (will be same as 7970 now). This actually means the following. For a performance increase of roughly 20% (thats higher clock included), you have to sell your 7950 for like 200 euro, and spend roughly 320 euro for a new card. Its 60% more money, for 20% increase. Not worth it if you ask me. Same situation with 7970, you will have a 30% increase there, but have to sell your card for 270 euro, and buy new one for 450 euro ... So for a gamer it might be an upgrade, for us? Not worth the money
When is upgrading a current-gen top-off-the-line GPU to the next-gen top-of-the-line card
ever worth it? The same could have been said for the 6970 to the 7970, or the 580 to the 680. Seriously, everyone knows it's a giant waste of money, but people will do it anyways. Me? I'm sticking with my 7970GHz for a good long time, but I'm cheap like that. Now if my Brother decided to build a nice expensive gaming rig, I bet he would spring for a nice 8xxx card.