Can someone explain the -1.0 Bus clock

[Fuzz]

After clock.
CPU Clock 3191.13
System Bus Clock -1.0
System Clock 354.57
Multiplier 9.00
L2 Cache Speed 3191.13 MHz
L2 Cache Speed Full

Overclock 32.96%

Before clock
Original Clock 2400.00
Original Bus Clock 1066.67
Original System Clock 266.67
Original Multiplier 9.00




Works fine, no issues just wondered why it's reading what it is

 

[Fuzz]

SIW was the program used.