QNAP TS-509 Pro @ techPowerUp
 

QNAP's latest NAS device is built around a full featured PC. As processor a Socket775 1.6 GHz Celeron is used. Upgrading the SO-DIMM memory should be easy too since QNAP was so kind to leave a memory slot unpopulated. The new hardware greatly improves the processing power resulting in much better transfer rates over the dual Gigabit interfaces.