Originally Posted by nht
Why have you become a zealot when a few years ago you were a much more level headed fan?
If you say so, but that doesn't address any of the zealoty
things you are implying I've stated.
The reason the comparison is made is because these are current devices with higher PPI and Apple has another 6-9 months to get the Retina. The panel itself is a non-issue given that the iPhone 5 has thinner panel technology that is lighter as well. Or they can use the iPhone 4/4S panel.
I have no idea what you mean by this. The displays in the iPhone 4/4S and 5 are all the same PPI.
GPU is a non-issue even if Rogue isn't available because the iPhone 5 about as fast as the iPad 3 was.
Again, no idea what your point is. What does the GPU being fine for the iPhone 5 have to do with the iPad 3 or a Retina iPad mini? Are you under the assumption that PPI determines how powerful the GPU needs to be? Are you suggesting that the iPhone 5 needs a more powerful GPU than the iPad mini because the PPI is double? No, it's about the total number of pixels that need to be pushed.
480x360 is less than 1136x640 is less than 1024x768 is less than 2048x1536. You can't put a 2048x1536 display in the iPad mini then claim it will perform as well as the iPhone 5 simply because they now have the same PPI.
t'll work about as well as the iPad 3 did using a little bit more power than the iPhone 5 does...they'll probably up the clock speeds a little...but the benchmarks are very close when you look at the performance for the same resolution (the offscreen 1080p tests). AND the SGX554 (iPad 4) is around twice as fast as the SGX543. Indicating that a SGX554MP2 is ALSO likely sufficient to drive an iPad Mini at SGX543MP4 speeds with lower power requirements than the iPad 3 or 4.
Again, this isn't accurate. The iPad 3/4 requires a lot more power than the iPhone to function. It's still the only the iPad with a quad-core CPU and the A#X chip. YOU CAN'T nearly 4.5x as many pixels and not expect this require a lot more GPU power, hence why Rogue 6 (or some other advanced GPU) will need to be hear before we can possibly get the GPU power usage to a point that makes it feasible for the iPad mini with a Retina (2048x1536) dispaly.
See AnandTech for the benchmarks. See how that 42W battery use power to drive that display. See how the iPad 3 was considerably thicker and heavier than the iPad 2 something Apple typically doesn't do. 4x as many pixels requires a lot more power for a comparable performance.
Will it be as teh snappy as the iPad 4/5? No...but it's still also the most inexpensive model and will be on par with the iPad 3 experience.
Miniaturizing the 2048x1536 display from only being 262 PPI to 326 PPI will make it cheaper? Possibly, but only comparing to the original iPad Retina display. Any advancements that lead to cost savings will still keep the lower PPI iPad display as being less inexpensive for a given resolution.
That leaves just the backlight which is not insurmountable given the device IS smaller than the regular iPad and there's no hard evidence yet that a 2nd backlight is required for an iPad Mini retina to achieve the brightness and evenness they desire.
IGZO could resolve that issue. You should note that a smaller display uses less power than a larger display if you assume all other aspects are the same, but you haven't considered that a 326 PPI display is denser than a 262 PPI display which may mean a brighter backlight to achieve the same total brightness. Overall I'd say this is nomial compared to the reduction in display area, but you need to consider every aspect.
Bottom line: Retina in the iPad mini will need the exact amount of power for the GPU as Retina on the iPad for a given performance using the same tech. This is science. You can't around it by interchanging the word Retina when it suits you. We're talking about 2048x1536 displays on each.Edited by SolipsismX - 12/29/12 at 10:26am