Is that much of a difference?  I have no idea if 3 MH/s is a lot or not.  Or what a MH is for that matter.  ?

Nice that it went up though.  Also that the card didn't get bricked.  I think that can happen when flashing the bios?

It is a significant bump, I don't know if this is because ethereum went up but I went from $2.50 a day to $3 a day.

Yes they can get bricked, mine has dual bios though so that wasn't a risk.

Hmm..  Is a dual bios a common feature?  

Or is the 380X a more premium level card that would have a dual bios?

I know my FTW3 1080 ti has a dual bios but this is a high grade enthusiast card.

I assumed that was why it has a dual bios.  

Or maybe it's just a choice a manufacturer could make whether to include this feature?

I've got a 4GB Gigabyte GTX 960 and a Gigabyte G1 GTX 1070 and I don't think either has a dual bios.  ?

So that's cool your 380X has that.  ?

Dual BIOS is pretty common, really cheap cards won't have it but a lot of mid range and high end cards do.

The 960 is one of Gigabyte's more basic models I think but the G1 was second to the Xtreme Gaming version (pretty sure that's what it's called before they changed to Aorus) so I would've expected it to have a feature like a dual bios.  

Yeah I would've expected the 1070 to have it.

I think the G1 1070 does actually..  ?

A quickie google search turned up a few results that seem to indicate it does in fact have some sort of dual bios feature.  It just isn't implemented the same way it is on my 1080 ti.