I can't see anything else new there, except PCPerspective suggesting there will be no improvement in tesselation...but that could be based on the lack of information on the weeks-old slides from chiphell.
AMD: R9xx Speculation
- Thread starter Lukfi
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I can't see anything else new there, except PCPerspective suggesting there will be no improvement in tesselation...but that could be based on the lack of information on the weeks-old slides from chiphell.
GF108 also seems to do better in perf/area vs gt215. The ddr3 versions of the cards (gt430 vs. gt240) have pretty similar performance, and GF108 is like 20% "simpler" (both less transistors/smaller).
DavidGraham
Veteran
http://www.chiphell.com/thread-129466-1-1.html
One question : why a rectangle , not a square ?
This will give us a much needed food for technical discussion , instead of meaningless arguments about nomenclatures !
Clusters of SIMDs arranged in 2 or 3 blocks versus a single stack as in the squarer Juniper & Rv770 die.
"Dual Cypress style engine" or whatever that slide said.
And not fully square like Cypress cuz there aren't that many of them to fill it out. I'd imagine Cayman squarer looking.
edit: Btw, thats 960 SP, 1280 would be 280ish range
DavidGraham
Veteran
Something doesn't add up, Antilles is 2x Cayman as shown in drivers, yet these power figures make that pretty much impossible
The drivers already said 2 months ago it's Cayman, not Barts based
Pricing will be key here; NI seem to match up so closely to their intended counterparts so AMD would do well to undercut them by a bit. The pin compatibility mentioned above will definitely help with this.
A Barts derivative would slot nicely into a highend mobile role; the 5xxx derivatives will do just fine for the lower end mobile parts since they're not making a process transition. This seems like a keep nVidia-at-bay / architectural pipe-cleaner refresh.
A Barts derivative would slot nicely into a highend mobile role; the 5xxx derivatives will do just fine for the lower end mobile parts since they're not making a process transition. This seems like a keep nVidia-at-bay / architectural pipe-cleaner refresh.
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chavvdarrr
Veteran
They will cherry-pick low-power coresSomething doesn't add up, Antilles is 2x Cayman as shown in drivers, yet these power figures make that pretty much impossible
thatdude90210
Regular
They can go for broke and just claim it's 250W. It's been done before.Something doesn't add up, Antilles is 2x Cayman as shown in drivers, yet these power figures make that pretty much impossible
chavvdarrr
Veteran
Barts pin-compatible with Cypress? c00l, looks like they are ready to price-war NV (tho they'll prefer no to )
Then undervolt & speed bin them and release antilles with lower clocks than cayman
who will prefer not to? Do you see NV cutting another 30% of their die size soon to make them competitive again?
I'm looking forward to at least another 6 months of steady AMD pricing. yay for ASP!
Question is how much faster than Cayman XT would Antilles (2x cherry picked low power whatever Cayman) be since they would both be around < 300W. I guess I expected Cayman XT to be around 250W max. Something doesn't add up.
The only thing the slide indicates is that 225W < Cayman XT < 300W. It could very well be 230W.
Hell, it could even be 224W and the extra power might only be there for overclocking purposes.
I guess those big dies and high TDP figures are the result of TSMC canceling their 32nm process, it seems AMD just implemented their designs in 40nm without changing anything substantial.
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Sounds like it, Factory/Reference or Custom boards etc.
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