Yes, it works fine with 2.1/5.5 mm barrel jack PSU. Those are rated for upto 8 Amps, but I've gone upto 10Amps on 2 different 2.1/5.5mm barrel jack PSU's without any problem.
It is safer to run it on a PSU with 6-pin PCIe connector though, specially if you plan to overclock it over 120 Watts. Those are rated for much higher currents. For example on an antminer S9 , 9x PCIe connectors deliver 1650Watts. That's about 15 Amps per PCIe connector.