6TF is bang on what the current rumours for the top end Polaris predict. So someone simply used that figure to come up with the 6TF number, or it could very possibly be an almost stock Polaris 10 / 480x. Technically feasible I guess, would certainly be interesting on an APU though and would no doubt need a fairly hefty power budget.
You always (or at least usually) pay a disproportionate premium for more powerful/faster products. Cars are great example since if you look at mph/£ supercars are a terrible deal. But people still go for them because some people are happy to pay a high premium for a slightly better product.
The latest leaked Firestrike benchmarks put the top end Polaris on par with a Rage Fury (non-X). And the same benchmark also puts the 1080 at about 44% faster than that. The 1070 which is a much more reasonable price is still around 16% faster and you'll probably get more performance/£ with the factory O/C models. Consoles will always offer better hardware value though vs new builds.
6TF is more reasonable. Even then slightly not realistic, it still makes owning a pascal 1080 quite foolish imo. 900 CAD vs a complete 6TF console at significantly cheaper price. Hard to justify these GPUs.
You always (or at least usually) pay a disproportionate premium for more powerful/faster products. Cars are great example since if you look at mph/£ supercars are a terrible deal. But people still go for them because some people are happy to pay a high premium for a slightly better product.
The latest leaked Firestrike benchmarks put the top end Polaris on par with a Rage Fury (non-X). And the same benchmark also puts the 1080 at about 44% faster than that. The 1070 which is a much more reasonable price is still around 16% faster and you'll probably get more performance/£ with the factory O/C models. Consoles will always offer better hardware value though vs new builds.