after looking at both review... the design may seem odd... but actually it function really well.. ecspecially in cooling department... most of the reviews stated that fortress 2 fares better in cooling performance compared to raven 2... but that was when fortress 2 is equipped with ap181 fans... while raven 2 not.. but raven 2 evolution does come with same ap181 fans as fortress 2.. so i think cooling performance will be equal for both... or fortress 2 still cool better?