Originally Posted by sherlock
315mm^2(PD) vs 216 mm^2(Sandy) was where he got the 99mm^2, my point was simply that you can produce more Sandy/Ivy per Wafer than PD, thus Intel have lower production cost in term of raw material and wider margins on their product due to higher prices. Something that gives them a R&D budget AMD can't hope to match as well as much more price flexibility in case AMD becomes competitive.
Bulldozer was much larger than Sandy Bridge because some work was offloaded to a machine in design, machine screwed up and it was rushed thus it resulted in a flop but not as massive as Pentium 4. Piledriver only introduced tweaks, small changes while nothing involving scale it down a bit so I am confident that Steamroller will introduce another 15% if it was also 32nm thanks to architectural improvements. Since its 28nm and it will need some changes in scale and other things, AMD engineers will further optimize it and problems that were created by the machine will be most likely fully removed.
Hopefully AMD will give a boot up Global Foundries butt chicks and fully move to far better TSMC that will also produce for Apple, because of that I am sure that 20nm will have two or even three fabs in H1 2014 and ready for mass production in Q4 2014 if there is going to be a fourth or fifth fab ready.
I was looking at Jaguar and its kinda funny how a A4 5000 28nm is really close to i3 3217U 22nm in performance but still having lower power consumption, A6 5200 will have same maximum power consumption as i3 3217U while better performance in games and programs using more than two cores. Hyper Threading gives a nice "boost" in performance when used, if were to remove hyper threading ability we would see a more clear picture of i3 3217U multi threaded performance without those two aditional threads...
Does anyone can find an info involving Hyper Threading patent since I read somewhere long time ago that it expires in 2015.