same generic fan sila brand name lang pinag kaiba
parehas silang hydraulic bearing fan AKA sleeve bearing fan with extra steps (extra steps is just grease)
parehas silang static pressure fan
parehas silang walang full enclosed support frame (meaning if my mobo ka na kaya ibypass rpm cap meron ka ng jet engine sa ingay)
darkflash rpm is 1100 inplay rpm is 1200 so performance wise same lang yan sila since
mas tahimik lang yung darkflash kase mas mababa yung rpm
if gusto mo tahimik then darkflash if wala ka naman pake sa tunog then bilin mo mas mura
or yung mas trip mo itsura since same lang naman silang low end fans