Recommended wattage?

[Cjhalgmad]

I know that there is a section on this already but I would like to be double sure. I'm looking to get a 1080 FTW and I have a 550w corsair rmx psu. I was wondering with a 6700k and corsair vengeance 16gb clocked at 3000mhz will this be enough?

 

Thanks!

[Guest]

Yes it will be fine for that. Have fun

 

[Cjhalgmad]

Just now, deXxterlab97 said:

Yes it will be fine for that. Have fun

 

Thanks for the double check, if you don't mind how would a moderate OC on both the GPU and cpu be if you don't mind asking?

[mariushm]

It will be enough. The 1080 ftw will use up to 185w and the rest of the system will use maybe 100-150 watts.  Even if you overclock everything, it would still be fine.  The RMX is a decent honest power supply, it can do what it says.

[Cjhalgmad]

10 minutes ago, mariushm said:

It will be enough. The 1080 ftw will use up to 185w and the rest of the system will use maybe 100-150 watts.  Even if you overclock everything, it would still be fine.  The RMX is a decent honest power supply, it can do what it says.

Ok thanks, just nervous after the "main" post said 650w was recommended. I did see some places say that pascal is very efficient but it's nice to have other people confirm it. Thanks guys!

[mariushm]

There's all kinds of power supplies. Some are designed to provide all power on 12v and use DC-DC converters to create 5v and 3.3v as needed, others reserve a part of the wattage for 3.3v and 5v exclusively, which means the maximum current output on 12v will be lower than the wattage in the power supply name.

 

So for example, a 550w power supply of the cheaper kind could have 100-120w reserved for 3.3v and 5v and only provide about 400-450w on the 12v output, which is used to power the CPU and the video card and the fans and other things.

The higher end power supplies with DC-DC converters produce all the 550w on 12v, and if the motherboard needs about 50w for 3.3v and 5v outputs, you still have 500w on the 12v output available for components.

And then, there's the cheap no-name power supplies, which often lie about their capabilities, claiming to be able to output 500w when in reality they're only capable of .. let's say 350-400 watts on 12v.

 

So anyway, basically video card manufacturers always recommend a wattage higher than the minimum needed, because they can't know what quality the power supply will have, if it's genuinely 500w or higher (and not just some crap with inflated numbers), if it's of the cheaper kind or with dc-dc converters... and they also can't know if the user overclocks their processors, if they have 10 hard drives in their computer ... you get the idea.,

 

It's just overall safer to say a 650w power supply is required and not have people upset when they buy cheap power supplies and the power supplies die on them.

[STRMfrmXMN]

44 minutes ago, Cjhalgmad said:

I know that there is a section on this already but I would like to be double sure. I'm looking to get a 1080 FTW and I have a 550w corsair rmx psu. I was wondering with a 6700k and corsair vengeance 16gb clocked at 3000mhz will this be enough?

 

Thanks!

Overclock to your heart's content.