Hi, can anyone tell me which card is currently the best for mining in terms of h/w. Currently I have 2x rx470 4gb and 1x hd 7950 and I get 615 h/s with 440w consumtion. I have them all undervoltet. If stock, rig is working at 540w. I have opportunuty to get msi rx480 4gb for 220 but am not shure to buy it.
For the best H/$ you need to look at the Fiji cards. The R9 Fury is about 345H/$260 running all out and 300H/$260 running efficiently.
Edit: For the best H/W you need to look at the 1070. The H/$ on the 1070 is quite a bit higher than the Fury though.
For the most efficient overall gpu with a future other than just Zcash is the RX 470. Getting them in the USA for about $164 and getting 231Hs = $/H = 164/231 = $0.71 cents per hash (use this measure is for purchasing).
Long term you need to evaluate the Hash per Watt = H/W. You want this number to be as large as possible to be most efficient.
Each RX470 is reading an ave of 70W on GPU-Z. Hash per gpu is 231Hs. H/W = 231Hs/70W = 3.3Hash per watt.
Whole system (7GPUs) at the wall is 1623Hs/1258Watts = 1.29Hs/W
*Hs = SOLs = Hash