Still confused.
Got mysleft RX 460.
It mines all of these: ETH, UBQ, EXP the same speed 12 MH/s, so it is strange why it differs so much on my previous R7 370 card...
Every card is different. The hardware on each model is different so you'll get different results. My older 7950's can push out 23 MH/s (UBIQ) with a slight overclock. Ethereum is different due to the dag file size, as is exp. I get slightly more hash for exp than ethereum.
I see.
Still strange to consider which card to buy, when seller of R7 370 said he gets 37 Mh/s from 2x cards for ETH, later i discovered that it gets that much for EXP, similar even higher for UBQ, and checked only 23+ MH/s for ETH from 2x cards.
By this calculation bought 3x RX 360 seller stated he is getting ~13,5 MH/s ETH each, so i though, i should get like 20 MH/s UBQ, but sadly almost same Mh/s for UBQ as for ETH.
Hard to decide before buying.
Drivers, operating system, and even strapping can make a huge difference on throughput as well. Especially with certain cards, sometimes an older driver works better, sometimes the newer one is best. I use linux for mining, and with my hardware I can only run certain versions of the operating systems, and only certain versions of the vid drivers are even compatible. For example claymore's miner recommends catalyst 15.12 for mining. I think I'm running that version, but I don't have much choice. With ubuntu anyway, it downloads the right driver from the repository and I don't know linux well enough to change it much. But even that is a trial and error thing sometimes.
I don't even want to get into custom kernels. There are mining farms out there running kernels that put anything us normals use to shame.