The point being primarily that apple most definitely do release different versions, even so far as having different RAM configurations.
I think pmau is a little confused because the A7 (and A8) still appears to be a single chip, because both the chip and memory are covered by a heat spreader.You're reading the wrong bit. See here:
"Apple uses the APL5698 variant of the A7 chip in the iPad Air. Its die is identical in size and layout to that of the first A7 and is manufactured by Samsung.[25] However, unlike the first version of the A7, the A7 used in the iPad Air is not a package-on-package (PoP), having no stacked RAM. Instead it uses a chip-on-board mounting, immediately adjacent DRAM, and is covered by a metallic heat spreader, similar to the Apple A5X and A6X.[25][26]"
Nope. Apple has never built two versions of the same SoC.
The iPad version has a higher clock rate because it can handle the battery demands and the increased heat. More RAM requires a different SoC.
PS: Meaning that both iPhones could have 2GB RAM, but they will have the same amount regardless.
Those were different chips with different integrated GPUs.Wasn't the A5/A5X and A6/A6X two versions of the same SoC?
Actually, this is false. For example, Apple has had an A4 chip with 256 MB RAM and an A4 chip with 512 MB RAM.Nope. Apple has never built two versions of the same SoC.
http://www.macworld.co.uk/review/iphone/iphone-6-plus-vs-galaxy-note-4-comparison-review-3572143/
Macworld sound pretty certain about 2GB for the plus
Macworld is guessing just like GSMArena.
I love how people just assume though that they're guessing when it's very possible that they have a review device in advance.
Based on Macworld's iPhone reviews history, I saw no evidence that suggests they have access to advanced review devices. I just see a bunch of vanilla comparison reviews.
I love how people just assume though that they're guessing when it's very possible that they have a review device in advance.
Show me where they do a take down and prove its 2GB RAM. Do that and then I'll listen. Until then, its speculation.
And until we know for sure, you're the one assuming they have an early access review unit.
Yes, absolutely. But not in any iPhone. I'll apologize to all of you, but I feel it won't be necessary.
Just to be clear again. They could both have 2GB RAM, I'm just saying they use the identical chip. Additionally, the 6plus needs more memory bandwidth on the bus to drive the display, which has 2,47 times more pixels.
It's not the speed, it's memory bandwidth. The 'megabytes per second".
This is why it might lag during lots of animations.
But I will shut up now. You can all buy me a beer on Friday.
What Apple seems to have done this year, according to their own statements during the introduction, is to have used the smaller process technology for efficiency gains more so than for compute gains. But they also doubled the number of transistors to two billion, so something else is obviously going on here.
http://www.anandtech.com/show/8514/analyzing-apples-a8-soc-gx6650-moreSo the went to a 20nm process for efficiency gains, but a 50% compute gain. If the ram is kept at 1gb, what are they doing with all those additional transistors?
http://www.anandtech.com/show/8514/analyzing-apples-a8-soc-gx6650-more
Anandtech believes Apple shifted from a 4-core to a 6-core GPU design.
The GPU is responsible for a disproportionate percentage of the A7's transistors, and that is likely also true of the A8.