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Looks like it is an 8 but must be a B since the following characters look like KTMR... So 2GB would be my guess too. Was the picture taken with an iPhone? lol. Could use some OIS. On another note... 2GB is better than 1GB. With additions to iOS and more and more DSP functions and increasing complexity... always good to engineer in a little more than what you need to prepare for hungrier iOS 9. Lots of older phones come with 1GB iOS/android etc... Most newer phones seem to have 2GB and 3GB. There probably isn't too much a price difference.
With the latest news about hi-tech workers in silicon valley being a target of wage fixing... you'd think these selfish corporations could throw in and extra few dollars in to their BOM. Apparently Jobs was the ring leader of employee hell. Sorry... Had to vent that. lol. Class action compensation around 9 billion (9G$).

What the following characters are implies nothing about the RAM amount
 
Assuming DDR3

Those are not the only parts.

The hynix site shows a list of mobile ddr3 parts which I assume are all in production. The only part they show with KTMR is 2GB. Do you have an alternate part # in production?
 
The hynix site shows a list of mobile ddr3 parts which I assume are all in production. The only part they show with KTMR is 2GB. Do you have an alternate part # in production?

The Apple A7 that currently ships in iPad Airs, iPad minis and iPhone 5S devices?
 
That didn't happen to most people though.
Only those of us serious, experienced Apple enthusiasts are aware of what's being experienced by Apples customer base. Well documented in this site in real time when the iP5 was a current model quality issues were common.

I buy one new MacBook each year. Have been for fifteen years in a row. Quality was exceptional year after year. Then in 2010 they replaced three brand new MBP's in a row, I unboxed each right in the store while the salesperson watched. Each of them had long deep scratches in the aluminum. That wouldn't be allowed out of the factory if proper quality control inspections where in place. My first hand experience left no question about the decline in quality. That's but two examples, I experienced more.
 
The lack of product code to reference for the memory is because Chipworks revealed that it's not a standard number of pins in the FBGA package. Their teardown revealed it had 456 balls. Normally one would think this would be indicative of a wider memory interface. Given the code has changed again, we'll have to wait and see what is going on.
 
I think yes, iPhone 5, 5c and 5s have 1GB ram so i think that is a right time for apple to come with 2GB ram capacity lets hope, but if that is not, its ok. i really want to go with iPhone 6 even with 1GB ram because its enough for me.
 
Here's a updated product decoder Hynix provided to me. There is both an '8K' and an "BK" option for the memory amount. An 8 represents 8Gb (1GB), but an 'BK' represents 16Gb (2GB).

I now believe it means 1GB unfortunately. Decoding says the following:

1GB 1.2V x32 LPDDR3 (1st Generation) FGBA 426 Ball, lead/halogen free

The only question is whether the x32 bit means anything, since the CPU is 64bit???
 

Attachments

  • Mobile Product Decoder_20140901.pdf
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Yep, just came here to share that, but you beat me by a few minutes. They emailed me this morning as well.
 
This also confirms the two channel interface for sure. So it's essentially the same memory minus 30 pins and a little smaller.
 
One of the journalists at the event should test Safari's tab reloading threshold with one of the display models. It would be far from conclusive, but more than what we'll have until iFixit figures it out for us.
 
Here's a updated product decoder Hynix provided to me. There is both an '8K' and an "BK" option for the memory amount. An 8 represents 8Gb (1GB), but an 'BK' represents 16Gb (2GB).

I now believe it means 1GB unfortunately. Decoding says the following:

1GB 1.2V x32 LPDDR3 (1st Generation) FGBA 426 Ball, lead/halogen free

The only question is whether the x32 bit means anything, since the CPU is 64bit???

If it is indeed a x32 chip, wouldn't we need two of the same chips for the 64bit cpu?
 
Slightly better view of the A8 showing the all-important eighth character is indeed an "8" and not a "B".

a8_closeup.jpg
 
Before I came into this topic, I thought the OP was on some "I think" bullcrap; however, your proof does make a lot of sense. Good job. Sadly, Apple won't mention our much RAM it has until someone gets a hands-on with it.

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Slightly better view of the A8 showing the all-important eighth character is indeed an "8" and not a "B".

View attachment 488301

Oh damn, just saw this. 8 will be 1GB then. :(
 
Before I came into this topic, I thought the OP was on some "I think" bullcrap; however, your proof does make a lot of sense. Good job. Sadly, Apple won't mention our much RAM it has until someone gets a hands-on with it.

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Oh damn, just saw this. 8 will be 1GB then. :(

Just on the fact that every generation gets a hardware bump, I don't believe apple is not bumping memory.
 
Slightly better view of the A8 showing the all-important eighth character is indeed an "8" and not a "B".

View attachment 488301

Difficult to know what the other codes mean. We saw one code begin with a K before, which was suspected to be a TSMC test run.

Chipworks' teardown of a NA iPhone 5S had codes that began with VT and the other S (it contained Hynix RAM), whereas Chipworkss Asia/Pacific model had an N code and digits only starting for the code containing the date. That one had Eplida (now Micron) RAM.

So, I'm not sure what either of those necessarily mean. My initial guess was that they could indicate life cycle (engineering sample vs. production) and potentially packaging house (one location vs. the other), but they don't seem to vary with any pattern.

A8 gives us a forth code starting sequence (previously saw N, K, S) with NK. So we'll just have to wait and see.
 
I don't think it is a G...it's clearly a K. That sheet is just the closest example I could find for a similar part.

At the simplest level, the RAM part numbers on the A7 and A8 are identical with the exception of RK vs. RW in positions that describe the package type and not the density. So 1 GB on both.

Between DDR3 and DDR2, which use the same format, there are over 30 examples on Hynix's lists and they are 100% consistent...the character in the eighth position denotes the density. 2 for 2 Gb, 4 for 4 Gb, 8 for 8 Gb, B for 16 Gb, and D for 24 Gb.

If folks would like to debate whether it's an 8 or a B there, that's one thing, but even then it seems pretty clear to me and many others that it's an 8.

Yep the 8th character is the size in HECS.

It's clearly an 8 not B.

Apps in iOS shed memory when the OS asks them, so all the ram can be made available for the main app running full screen. There would be very few apps, maybe 3d games, that would need more than 1gb of ram.
 
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