What does "mining mode" in bios do?

[androstan1234]

I have it selected but idk what it actually does.  It doesn't change pcie to gen1/gen2.  It doesn't disable hibernation.  AFAIK some boards do not even have this option in the bios, and are used for mining.

Are there some kind of optimizations applied or something?  Anyone have any insight?

[BennyT]

Some bios will label it more accurately like "Above 4G decoding". Essentially if it's not turned on, your system boots with the VGA allocated memory below 4 gb address space. Mining requires higher memory allocations as you also set it within windows.

[androstan1234]

Thanks buddy.  Been wondering this for a while.

[edwardceng]

Maybe it will allow you to use a lot of GPU. What Motherboard are you talking about? some motherboard like Biostar tb250 has bios settings similar to that.

[cryptodunno]

for some of MB this options allows to use 4+PCI-e ports for GPUs