motherboard: ASRock H110 Pro BTC+ Intel H110 LGA 1151
psu: be quiet! Dark Power PRO 11 1000W
cpu: Intel Pentium G4400 Pentium 3.3 GHz - Skt 1151 Skylake - 54 W
ram: G.Skill Value Series DIMM - 4 GB DDR-4 2,400 MHz - non-ECC
ssd 120gb
6x rx580
i wonder that psu can work with this setup without problem?
6 x RX580, 110w each = 660w
CPU - 54w
RAM/SSD - 10w
Mobo - 100w
Total 814w. Never run your psu at 100% for 24/7, so add 20%, which comes to 976w, so I would go for 1000w PSU.
Just want to point out that the math here is slightly flawed as we usually calculate based on 80% efficiency of the PSU.
If the total is 814W, the calculation should be 814/0.8 = 1017.5. So in this case, the OP should go for a 1100W or higher PSU.
That said, the difference is very small, so a 1000W at 81.4% utilisation should be alright.