| phaedruss said: http://en.wikipedia.org/wiki/Tegra#Tegra_K1 So according to wccftech, if it's accurate, the Tegra k1 consumes 11 watts, less than, let's just say 11. According to that wikipedia entry, the Tegra k1 is rated at 364 Gigaflops. That's 33 gigaflops/watt on 28 nanometer process. I can't find the slideshow right now (argh!) but according to AMD power consumption going from 40 nm to 28 nm could be reduced to as much as 30 % of 40 nm. That might be an extreme case, but even reducing the clock to about half as many gigaflops could get you around 5 watts. Factor in new more power efficient architecture with another die shrink to 20 nm, it seems you could easily get at least 50 gigaflops per watt at 20 nm at the very least. That's 4 w for 200 gigaflops. As far as the tablet thing, I just showed earlier that the 3DS XL is about the same size as an ipad mini. |
Don't just believe that the Tegra K1 can consistently pull off 33 Gflops/watt consistently as it often caps out at around 25 Gflops/watt cause of the fact that it throttles a lot.
BTW don't expect much gains from going to a smaller process node as leakage issues become more apparrent so reducing power consumption at smaller process nodes will get harder and harder. Architectures also don't play a big role to performance gains in comparison to chip scaling so that's pretty much a moot point you've got on your hands.
Just note that the IPad mini is using the same processors as the iPhones but instead of being clocked at 800 Mhz it's clocked at 1 Ghz so that's actually a small increase in power consumption compared to the iPhones. 5 watts are meant for noticebly bigger tablets.
