Where in the world did I say four times faster? Or where in the world did you get four times faster?Also, GCN can't be more than four times faster than it is on the 79xx cards because they have a 1 to 4 DP to SP ratio, so unlike you, I have a very goo idea of how well it can perform.
Stop fabricating things. Whats with the personal attacks anyways "unlike you"..."You have no idea".....I do have an idea, I do know what i'm talking about.
Whats with the attitude anyways?
Do you think I would be here just because I can type? No, I'm here because I know about technology, and not some random schmuck who doesn't know the difference between different architectures.
I'm done here. Continue fabricating things if you wish.
If you read just a few words further, I say where I got the four times number. The best possible DP to SP ratio is 1 to 1 (and even then, it comes at the price of hindered SP performance), so the best possible performance for a GCN based compute card is four times faster than a similar GCN consumer card (only true for the 79xx cards because the rest of them, although they use GCN, have less of the compute oriented improvements than the 79xx cards, leaving them only ahead of Kepler. For example, the 7870 is a little ahead of the GTX 680, but that's hardly an achievement).
The 7970 has a 1 to 4 DP to SP compute ratio, meaning that it's SP compute performance is about one fourth of it's SP compute performance. Professional cards are better at compute than consumer cards because they have modifications to improve that ratio.
I was explaining why GCN would not beat Kepler, based on current information about the two. I'm not fabricating things, I'm using known information to show why you are wrong. You were wrong and you were denying it and accusing someone else of being wrong, so I used wording appropriate for that. All of my numbers and alpha's numbers are freely available information from Tom's, Anand, Nvidia, and AMD.