Hacker News Reader

I'm curious how much RAM it has but it seems no one knows yet even after a teardown.

The teardown indicates that "K4X2" is written on the A4 chip and they believe this to be a Samsung DRAM part number. I Googled for it but found nothing helpful so am going to stab in the dark and guess 4 gigabits (a more common measurement on-the-chip for memory) * 2 == 512MB * 2 == 1 gigabyte. Of course, that's a total guess and I've not seen memory part numbers work quite that way before ;-)

From Step 15 (http://www.ifixit.com/Teardown/iPad-Teardown/2183/2):

Markings on the A4:

- N26CGM0T 1007 APL0398 33950084 YNL184A2 1004 K4X2G643GE

- Yes, the K4X2 is a Samsung DRAM part number!

- Decoding the part number shows there is 2Gb of memory inside. This translates into ~256MB of memory.

- This means the A4 processor is probably being manufactured by Samsung.

- The DRAM was stamped at the end of January, while the processor die was likely manufactured the third week of February.

Just FWIW, that "Decoding the part number" bulletpoint wasn't there when I made my post :-) But.. hmm.. that sucks!

Reply on news.ycombinator.com