@CutThe Corsair CV550 is an updated version of the VS to Bronze.
Based on the specs, the Gigabyte not like the PB-650B which uses DC-DC (the CV650 is DC-DC as well), as specs on 12V suggest group regulated like the CV550. So they are both low-end, budget units, which I would get the Corsair CV.
In the $75 price point though, I would recommend the CX550 instead: https://www.newegg.com/corsair-cx-series-cx550-550w/p/N82E16817139202
Or the 450 version, as that would be more than plenty.