I have tested my 6100 several times with a G3 upgrade, an older Radius graphics card and the 486 Intel CPU card and I also noticed these differences about the temperature inside the housing - but to me it wasn't the reason for a locking up Mac.
In the beginning I've been using the original Quantum hard disk but especially when using this disk along with the G3 upgrade the 6100 showed these lock ups. This didn't happen with the Radius or the 486 card.
So I exchanged the original Quantum drive with an IBM Deskstar (in fact I never trusted the old Quantum drives). The lock ups didn't reappear.
So it -> might <- be worth a try in my oppinion as later hard disks usually don't have that higher power consumption as the older ones.
J
In the beginning I've been using the original Quantum hard disk but especially when using this disk along with the G3 upgrade the 6100 showed these lock ups. This didn't happen with the Radius or the 486 card.
So I exchanged the original Quantum drive with an IBM Deskstar (in fact I never trusted the old Quantum drives). The lock ups didn't reappear.
So it -> might <- be worth a try in my oppinion as later hard disks usually don't have that higher power consumption as the older ones.
J