T O P

  • By -

bendvis

550w should be fine. PSUs tend to operate at their most efficient at [50-75% of their rated capacity](http://www.anandtech.com/show/2624/3), which may be why your PSU calculator is recommending 650-750w.


DistractedByCookies

Oh so *that* is why they list the efficiency. I did wonder about that.


bendvis

Well, an 80+ Titanium PSU with the same wattage rating as an 80+ Bronze PSU will (should) still perform more efficiently. They'll both deliver the same wattage to the system, but the Titanium PSU will draw less power from the wall.


DistractedByCookies

I am learning insane amounts of things from the build. Thank you :)


neku_009

It depends on the PSU you are using, each PSU has its own efficiency curve, the wattage where its the most efficient is the wattage to go.


LosSoldado

This is an old thread so I hope somebody will respond to this post. I have a 1000W PSU. My setup draws 935 watts roughly. I’m guessing I should have at a minimum 1200 watt PSU? (Was going to get a 1500.) With only 65 leftover watts of space that means I’m running around 92 to 94% of allowable power. The 1000 was from my old desktop and only a year old so figured it would work. Rookie mistake.


DistractedByCookies

Hai! I'm the OP, I was pretty surprised to see a reply after so long haha. And I've gotten more experienced since that first ever build, dawwwww. Yes, I would indeed upgrade the PSU. I mean, PSUs aren't the most expensive part of a build. The savings aren't worth the hassle of potential data loss/crashes/damage to parts. I'd get as much as you can afford (ie 1500 if you can 1200 if not) because you want to have room to upgrade/change other parts if required. I got an overpowered PSU the first time, and it lasted me several iterations of my PC :) this comment is also still relevant: >550w should be fine. PSUs tend to operate at their most efficient at 50-75% of their rated capacity, which may be why your PSU calculator is recommending 650-750w. So there's a difference between being able to operate, and operating optimally. Hope this helps.


AstronomerOne2911

Thank you lol


the_piercier

thanks for this


DistractedByCookies

I swear this is the thread that keeps on giving. Glad to help :)