NF7-S and MBM5 (WinBond?)

MBM5 gives me 3 different temp sensors to choose from:

WinBond1
WinBond1 2N3904
WinBond Diode

What's the difference between these?

I just choose "WinBond". There's WinBond1, WinBond2 and WinBond3.

1 seems to be the CPU temp
2 seems to be the case/system temp
3 reads as -48C, have no idea what this is

Is there a reference somewhere that explains what each is/does? Thanks in advance.

[nb - just got this system in the mail today from newegg. Want to get stable first, then attempt my first ever OC tomorrow]

Sensor Chip.......W83627HF
Case Sensor......Winbond 1
CPU Sensor........Winbond 2

try winbond 3 muhahahahahaha

I got 127C!!!!! must be my soundcard irq or something well funny

Thanks, so just ignore (do not select) WinBond3. 127C huh, and I've got -48C, that's a large range.