yes that is the number set it ... after set you need to restart te computer to make the new NB speed take effect...
after you shutdown the computer the setting will be gone.. so no worry
to make it easier number shown in that place represent
00001b = NB Multiplier 5x
00010b = NB Multiplier 6x
00011b = NB Multiplier 7x
00100b = NB Multiplier 8x
00101b = NB Multiplier 9x
00111b = NB Multiplier 10x
NB Speed = NB multiplier x HTT
Good Luck