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    Quote Originally Posted by tajoh111 View Post
    Something like a 20 percent increase in die size isn't going to be a magic bullet for 40 percent more performance, particularly at the clocks 7970 ghz is currently set at and how much performance it has.
    Where does this 40% increase keep coming from? Why are we comparing Tahiti clocks and performance? Hawaii is a different ASIC with an evolved/tweaked architecture.

    Quote Originally Posted by tajoh111 View Post
    I remember you were particularly optimistic with the performance difference between 5870 and 6970. That had a 16.4% difference in die size and we got something along that line for the performance difference(you expected much greater).We probably get less than that 16.4% Probably a bit below it if we take an average across the board.
    Average is/was at least +20% over 5870. Ibiza performance targets got leaked and mixed in with the Cayman leaks...
    I have apologized about that on numerous occasions.

    Quote Originally Posted by tajoh111 View Post
    With this 430ish die size coming from a particularly reliable source, Tahiti isn't going to get the massive spec jump like between gk110 and gk104. So it can't afford the low clocks like gk110. However I am guessing it can't particular afford to keep clocks high considering the relatively high power consumption of a 7970 ghz and the increased die size over 7970, increasing the complexity of the gcn cores. The better front end might increase utilization and efficiency of resources, but powers going to go up quite a bit like the 5870 to 6970(this went up more than the performance in some reviews).
    We will have to wait and see. There are numerous optimizations/efficiency gains that have been added to GCN since Tahiti was released.

    Quote Originally Posted by tajoh111 View Post
    I still stick by my 18% performance increase over a ghz edition(it might be greater if Battlefield 4 is mega optimize benchmark). But for the most part in GPU design history, the larger the size of a chips predecessor, the less each companies has been able to wring out for its next gen, particularly on the same process.
    That is great, you do that.

    Quote Originally Posted by tajoh111 View Post
    Somehow getting 40% more performance from only a 20 percent increase in die size on the same process is unprecedented. And with GCN not having a lead for performance per die size this generation and this relatively modest increase in die size, even with increased efficiency, its going to be hard for AMD to make the Iceberg you so desire.
    ~30% more performance with a 51% larger die. GK110 isn't exactly holding a mm2/performance lead.
    Last edited by LordEC911; 09-16-2013 at 12:47 PM.
    Originally Posted by motown_steve
    Every genocide that was committed during the 20th century has been preceded by the disarmament of the target population. Once the government outlaws your guns your life becomes a luxury afforded to you by the state. You become a tool to benefit the state. Should you cease to benefit the state or even worse become an annoyance or even a hindrance to the state then your life becomes more trouble than it is worth.

    Once the government outlaws your guns your life is forfeit. You're already dead, it's just a question of when they are going to get around to you.

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