specs it would take to surpass gtx 780's perf per clock

[The Alias]

ok pretty much what the title says
looking at tpu's review,

the gpu would need to be 32% faster per clock to match up with the 780, but that's the absolute worst case scenario as the 780 clocks up on it's own and the 7970 doesn't so 32% is probably the highest percentage possible . So in conclusion, what specs do you think would be good enough to beat the 780 in perf/clock ?

 

[Elfear]

ok pretty much what the title says
looking at tpu's review,

the gpu would need to be 32% faster per clock to match up with the 780, but that's the absolute worst case scenario as the 780 clocks up on it's own and the 7970 doesn't so 32% is probably the highest percentage possible . So in conclusion, what specs do you think would be good enough to beat the 780 in perf/clock ?

32% is probably the best case scenario for the 780. If you look at a reference 780, it's about 14% faster than the 7970Ghz. Moving a couple sliders to increase TDP and temp limits, puts it 20-25% faster. Max oc aftermarket 780's vs. a max oc 7970s are about 30-35% faster.

So in order to answer your question, it depends on how you want to compare them. IMO, a 9970 with 2560 shaders, 1Ghz clocks, and GCN 2.0 efficiencies thrown in would match a 780 in general.

 

[ocre]

32% is probably the best case scenario for the 780. If you look at a reference 780, it's about 14% faster than the 7970Ghz. Moving a couple sliders to increase TDP and temp limits, puts it 20-25% faster. Max oc aftermarket 780's vs. a max oc 7970s are about 30-35% faster.

So in order to answer your question, it depends on how you want to compare them. IMO, a 9970 with 2560 shaders, 1Ghz clocks, and GCN 2.0 efficiencies thrown in would match a 780 in general.

not feeling good about some of your figures (see 14%) but it really would be fantastic if AMD blew the 780 out of the water with their 9970. I just am starting to doubt that its gonna be twice as fast as the 780. As cool as it might be, i think that its really out of reach. And i think you are saying the same, correct?

Are you saying you expect those specs to match the 780 performance? So with this estimate a 2560sp HD9970 at 1200mhz should better the 780 by 20%?

 

[Elfear]

not feeling good about some of your figures (see 14%)

3D Center compiles results from multiple reviews sites (6-10 in the link I provided). Some of those review sites test the 780 after it's warmed up and some test it cold which varies the amount of boost available.

but it really would be fantastic if AMD blew the 780 out of the water with their 9970. I just am starting to doubt that its gonna be twice as fast as the 780. As cool as it might be, i think that its really out of reach. And i think you are saying the same, correct?

I am 99% sure the 9970 will not be twice as fast as the 780 but I do have high hopes it will equal or surpass it. It better for as long as AMD has had to work on it.

Are you saying you expect those specs to match the 780 performance? So with this estimate a 2560sp HD9970 at 1200mhz should better the 780 by 20%?

I would expect those specs to put it around 780 performance and, if performance scales as well with overclocking as it does with Tahiti, 1200Mhz would be ~20% faster.