512mb
.ifixit.com/Teardown/iPhone-4-Teardown/3130/1
^ add the www
According to the company that produced Infinity Blade 2, there's only 512MB RAM.
Chair talks Infinity Blade 2, iPhone 4S News - iPhone - Page 1 | Eurogamer.net
From the article for those who do not want to click the link:
I'm still shocked that, with the iPhone 4S, I'm literally running around with a 1080p video camera in my pocket, with an eight megapixel camera, 64GB of hard drive space and an A5 chip with 512MB of memory. This is a really powerful computer, right?
You do realize this is for iPhone 4, NOT iPhone 4S?!