A5 and A8 are very similar and share the same chipset (so performance), RAM (2GB), internal flash storage (8GB), wi-fi (single band N), LAN (Gigabit) and remote. The firmware is the except for the features relating to internal HDD and ISO menus.
The main differences are:
- A8 has space for an internal 3.5" HDD.
- A8 does not support BD or UHD ISO full menus. Main feature playback only.