I am sorry, what is a B3 and GO? I mean like whats the difference, I just looked at the box, it doesn't say anything....
If you see SLUM9, B3.
As luk said the G0 has a higher temp thresh hold and only 95w tdp while the B3 has 105w tdp.
I have a G0 and a B3, the B3 runs about 10Â°c hotter than the G0 with the same vcore.