The P104-100 per all of the data I have been able to gather
(3) should have 20-30% lower power usage at the same clocks vs the GTX 1080 consumer cards, due to no video circuitry and disabling the "video-specific" parts of the GPU.
3. Doesn'twork like that, the part you don't use don't use much energy to begin with, so you won't gain as much just by disabling them.
TheStilt in his celebrated BIOS mods for the R9 290 achieved ballpark 15% savings on his NOT UNDERVOLTED version of the BIOS (personal testing on my own cards when I was first checking those out) - and he didn't disable ALL of the video out capabilities on the GPU, just most of them.
I doubt a factory mod that disables ALL such circuitry would achieve less, and should achieve a bit more.
I do concede that it's an estimate, and I wouldn't be shocked at more like 10% given upgrades in tech since then, but at least one source was QUOTING "10-30%" for that figure on the P106-100.
Given GTX 1060 pricing is now climbing, $270 right now wouldn't be a bad price for the P106-100 - significantly less than the consumer 6GB versions in almost all cases right now - even if it IS quite a bit higher than reported "MSRP" was supposed to be per all of the rumors of pricing.
