ok thanks someone told me to get a 1000w for some reason in-case i want to upgrade my pc. any he said that it has a higher chance to go on 1 rail. idk what he means by that
The psu can deliver the power split in one, to or more rails specifically the 12v, is a matter of discussion about one or two rails are better some prefer one, some said two isn´t bad, the seasonic is single and almost every good one.
Having a 1000w psu can be counter productive because a psu work at a better efficiency at 50-80% of load and if you don´t have a multicard build maybe you will load a 1000w psu by 50% max and can be overkill even in multi so is your choice.