Seasonic Prime PX 750 - worth it?

OZONE · 14 Sep 2020 at 01:32

In need of a 750W power supply and I've found the Seasonic Prime PX 750 as my top contender.

Has anyone on this forum got experience with this PSU?

OZONE · 14 Sep 2020 at 14:09

JohnG7 said:
No but the brand is good but if you want to keep it a while and want a new GPU like the Nvidia 3080 etc then I would go a big higher watts, as 750watt is the min rec so IMO 850watt.

I was under the impression 750W would be perfect for the 3080.

Too late though, I've ordered it and it has been dispatched D:

Hopefully I'll be fine!

OZONE · 15 Sep 2020 at 14:36

JohnG7 said:
Probably will but best over-rated than under-rated and you want to keep it for future upgrades.

Are there any disadvantages to having a PSU which is very high in wattage?

Are these units more inefficient at lower lowers? If so, by how much and is it significant?

OZONE · 15 Sep 2020 at 16:29

The ROG 850W Thor looks nice, and is Platinum rated. Would that be more efficient at low loads than a 650W Gold rated PSU?

OZONE · 15 Sep 2020 at 22:43

JohnG7 said:
AFAIK yes and right to near full load where efficiency normally drops abruptly, again go and read up on it.

Tbh my limited understanding of the topic was PSUs with a higher reserve were less efficient than lower wattage models.

But if the 850W platinum is more efficient across low wattage scenarios (eg 50-100W when idling) than a 650W gold, then I'm happy.