- Mar 1, 2019
Prime Ultra Gold was near its end of life production cycle and getting cheap(er) because of that.SeaSonic PRIME Ultra Gold 750 W 80+ Gold Certified
They are now called PRIME GX. Not sure if anything of substance changed or just a name rebranding happened tbh, but something like the PRIME GX-850 seems to cost around 280$ CAD now.
Both your choices seem to be the exact same PSU, but one is full modular, and one isn't. Now that barely makes a difference. You must plug in the CPU and MB power connections anyway. A scenario where this isn't the case doesn't exist in the ATX world.
The semi modular PSU has less connections for peripherals etc. But other than that: it's the same thing.