I thought all OMAP3's would have 256MB of RAM... Especially when the OMAP2 used in our current tablets already has 128MB? Would be silly if OMAP3 didn't have more considering it is 3 years (?) newer product...

EDIT: OK so it appear that OMAP3 SOC doesn't have much RAM in it (64K only). In practical purposes all the RAM is external, so it is up to device manufacturer how much RAM to put in the device... (Unless there is possibility for customized OMAP3 chips with more on chip RAM.)

TI OMAP3530 datasheet:
http://focus.ti.com/lit/ds/symlink/omap3530.pdf