Quote:Well, grumpy McGrumperston... Here's the thing. The BIOS may very well have a simple lookup table assigned to power scaling. They do this with other settings - the "output" value is the value in the table location indexed by "input" (which is scaled to (max-min)/(#of locations in the table) ).
As such, when you go outside their expected input values, by say, shorting out a path that would ordinarily include a voltage drop, you run the risk of putting your "input" in the wrong/unexpected/undesireable location within that lookup table.
A crude analogy is an A/D with a limiting circuit driven past breakdown voltage. You still get a voltage reading on the input of the A/D, but its now on the opposite end of voltage swing. It doesn't saturate but rather "wraps".
It stands to reason that different bios/lookup table shapes would give you a different response to this condition based on how often they reached the "wrap" point whatever that may be in this case.
Edited by cekim - 4/20/17 at 11:17am