Fourth-Generation iPod Touch Offers Only 256 MB of RAM
One of the key pieces of information coming out of iFixit's fourth-generation iPod touch teardown is that that the device carries only 256 MB of RAM, the same as the iPhone 3GS and iPad but less than the 512 MB found in the iPhone 4. iFixit'...
http://www.macrumors.com/2010/09/08/fourth-generation-ipod-touch-offers-only-256-mb-of-ram/