I can say a few words about RX 480 cards (480P836BM)
and power draw
All my cards are optimized for eth mining , if im using modded bios I optimized for zec or xmr , all this numbers going to change ...
there is my another build i documented here on bitcointalk:
https://bitcointalk.org/index.php?topic=1614386.0Im using xfx rx480/8gb (480P836BM) cards for my latest builds .
xfx rx 480 / 8gb original bios Those numbers is for the card itself , not the whole system.ETH : 24MH/s , power draw 150 watts using claymores 7.4
ZEC: 230H/s , power draw 145-150 watts , using claymores zcash v11
XMR: 630H/s , power draw 120-130 watts , using claymores CryptoNote GPUv9.7
xfx rx 480 / 8gb with modded bios , bios optimized for hashing speedETH: 30.3MH/s , power draw 175 watts , using claymores 7.4
ZEC: 234H/s , power draw 165 watts , claymores zcash v11
XMR : 758H/s , power draw 165 watts , using claymores CryptoNote GPUv9.7
xfx rx 480 / 8gb with modded bios , bios optimized for lower energy usage / higher hash rateETH: 29.6MH/s , power draw 135 watts , using claymores 7.4
ZEC: 217H/s , power draw 120 watts , claymores zcash v11
XMR: 731H/s , power draw 116 watts , using claymores CryptoNote GPUv9.7
I have 14 of those cards , with 2x7 setup .
I received them with 3 different version number ( 0 , 1 , 2 ) and 3 different bioses.
Modded all bioses , card hashnig between 29.8-30.1 MH/s stable
with modded bioses , each card consume around 120-130 watts on 240 volts , 7 cards setup with mobo/cpu/sdd/8gb mem , the whole system is pulling around 900 - 970 watts on 240 volts.
Without modded bios the cards was hashnig stable with 24MH/s and consumed around 150-160 watts , the whole system is pulled around 1100 watts..Im using evga 1600 watts T2 psu ...