So in addition to the default small instance (1.7 GB of memory, 1 1.0-1.2 GHz 2007 Opteron/Xeon processor, 160 GB of instance storage, 32-bit platform) Amazon now offers large (7.5 GB of memory, 4 processors spec as before, 850 GB of instance storage, 64-bit platform) and extra large (15 GB of memory, 8 processors spec as before, 1690 GB of instance storage, 64-bit platform) instances.