First of all, I would like to thank to all users who shared their experience. I am new in mining and I did a lot of research about mining cards. I have read a lot of articles how 400/500 series will become obsolete when dag epoch will be 130...then 140, then 150 and so on...Today is dag # 151...so how the things going?

I am buidling first mini-rig for 4GPU (i got MB,CPU,RAM,WIFI,RISERS,HDD for 75usd total - thats why)

I was calculating all availible GPUs on the market and considered their SPEED/BUY-IN PRICE/CONSUMPTION...in the end i just calculatued cost inc.electricity for 1MH.
And from my numbers, 460/560 are still great choices. So I bought used MSI 460RX 4GB OC for ~100 usd.

And todays numbers?
Out of box 11MHS and 345h/s for cryptonight. When i was trying to tune in in afterburer, the speed goes down to 10-10,5 only.
So I opened shaders and copy paste 1750 timing in bios and increase max freq. Done in 5minutes. Card is runing now 1050/2060 at default power in bios (what is 48w max). Result is stable 14,35 MHS. at 50c.

I dont want to waste more power on it, so power limit is stock from original bios. Probably there is room for adjustments, and i guess with 2100-2300mm it can goes up to 16+-

Power from wall for everything in rig+1 card is 145w for ethash and 125w for cryptonight mining. So for 4gpus total will be 250-300w, for 57MHS and 1550 h/s cryptonight it is not that bad, and can be powered from cheaper 450w PSU. So for whole 4 gpu rig price is 580usd. And depending on situation, daily PROFIT is 3,5 - 4,5 usd at todays numbers, so ROI is around half a year (cryptonight). Ethereum is max 2usd so 1 year.

So for me, these are still gret numbers, we can say it is half of 570/580/470/480 in mean of speed, power consumption, and even size ...but for less then a half price (depending on country where you live)
New XFX 460 4GB here - 125usd
New 580 4GB here - 320 usd

My only disapointmen is CryptoNight speed...ive seen here numbers 400-500, I would be happy for 450...any tips?