Asus U3oSD has Intel’s Sandy Bridge Core i5-2410M processor. This dual core CPU runs at 2.3GHz or 2.9GHz with turbo. Intel’s integrated graphics runs at 650MHz and takes care of 2D.
U30S’s Western Digital 500GB hard drive spins at 5400RPM, resulting in only 60MB/s. Asus offers faster drives as well and it might be wise to take them up on the offer.