Overpowered?

[Wintoons]

Hi there,

I have a question for anyone on here, I hope its not a silly question, but if I bought a power supply (which was a lot say 1000w) and is an overkill, would the PC and its components 

suffer (blowup or fry) or will it just balance the power out?

 

Thanks  

[Tellos]

It will usually only draw the power needed to run components unless it's a really crappy cheapo brand but even then I rarely heard of that. Typically it jsut won't use full power. My current rig maybe peaks at 450 to 500 and my PSU is a 650W.

[Skiiwee29]

No it will not cause any harm to your PC components. Generally though when you have such a large disparity in wattage available to wattage used, the efficiency rating is sub par from what the PSU is actually rated at. 

 

Say you have 1000w PSU and it is rated at 80+ gold.  You now have your system up and is using 450w from the wall. You are effectively hurting the PSU efficiency more. I am trying to find a good explanation to link to you to explain it, so more to follow. 

[synnapt]

ye as long as it's not a backally brand, the rating on it is just how mutch it is able to push through if needed,

 

i got a 850W powersupply and couse im meetering how mutch my pc draws i know it only draws ca 100W from the wall

[Skiiwee29]

Here are 2 quick ones I found.

 

http://www.anandtech.com/show/2624/3

 

http://www.tomshardware.com/forum/343495-28-power-supply-efficiency-myths

[Xenift]

If you get more than you need, for example 1000w and your system only drains lets say 500w.

Its not going to be as efficient if you get the same model but at 650w.

 

Power supplies tend to be more energy efficient when close to their peak ratings or near of. There should be graphs online for your particular model so you can use that to determine how much/less efficient it is if you go 1000w.

[Froody129]

3 minutes ago, Xenift said:

If you get more than you need, for example 1000w and your system only drains lets say 500w.

Its not going to be as efficient if you get the same model but at 650w.

 

Power supplies tend to be more energy efficient when close to their peak ratings or near of. There should be graphs online for your particular model so you can use that to determine how much/less efficient it is if you go 1000w.

Actually most will be more efficient at about 50% load. It will of course vary between models

[Wintoons]

That's cool. I was curious. The reason I'm asking is I'm thinking about getting 2 GTX 1080s in the future and I didn't know if I had to replace the current PSU I've got.

The current one I've got is an ANTEC 80+ Bronze 620W PSU. Is that powerful enough?  

[STRMfrmXMN]

7 hours ago, Wintoons said:

That's cool. I was curious. The reason I'm asking is I'm thinking about getting 2 GTX 1080s in the future and I didn't know if I had to replace the current PSU I've got.

The current one I've got is an ANTEC 80+ Bronze 620W PSU. Is that powerful enough?  

It probably is but I wouldn't personally run two 1080s on an old group-regulated unit. Get an EVGA 750G2 which can often be found for under $100 which is a steal.