And as for the X1 crystal - do not change it. It is used for the USB communication (and will not overclock anything).
Clock speed on the BitFury chip is determined by the voltage - and the two resistors you mentioned will change that. (exact formula and details are in the previous posts)
lol, derp. It's been too long Clock speed on the BitFury chip is determined by the voltage - and the two resistors you mentioned will change that. (exact formula and details are in the previous posts)
Will adjust post ( and also point to more complete BoM with DK partnos
)