0) Which model do you have?
4x xfx Core RX 480 4GB
1) Whats the power draw from the card when 100% mining (is it really max 150 watt?)
93w
Entire system at wall 475w (assumption system = 70w)
2) What temperature does it run at , and ( please describe the surrounding environment/temperature) ?
70c set
@42%rpm
Hot garage with other rigs, no fans needed on these cards unlike 390s
3) What MH/s are you getting on average on pools and which ones?
97MH (4 cards 24.25MH ea) @ ethermine.org
ethermine.org/miners/d466b7880996d6ca134398f79e93a5660acc2c31
RIG = CM-winrig3
Using Claymore ETH only v4.7
4) Is there any problems? Are they stable ? What about all the power issue AMD is reporting, etc ?
changing setting while under load can result in BSOD or HANG with no reboot
limited to 1800 MEM, how ever any thing other than 1750 mem and you lower hash possible driver issue.
5) Is there any benefit to the particular card you bought? (Undervolting, overclocking mem/MHz,etc)
undervolt all to 800mv and 20% underclock
very stable
possible upgrade to 8GB when bios flashing tool available.