I agree with you that our disagreement is very, very minor. Unless you're doing SLI or something exotic, a good 450W or more power supply should be more than adequate for the job. Getting one rated at 90% or so should reduce the heat some more as well - reading power supply reviews for efficiency and noise might not be a bad idea either.

 

 Yes it is minor.

 

 

 And to be honest, the difference in cost between a 450 watt PSU and a 600 watt PSU isn't a show stopper. A decent quality Corsair Gold 650 watt PSU is a mere 20 quid more than a 450 watt here in the UK. £60 for the 600 watt, so why not. Especially since most of us will be in our sheds designing our quantum field generators for our hyper drives and thus will need the extra power. 

 

This guy gives me 667 Watts...

 

http://outervision.com/power-supply-calculator

 

But then will I some time in the future go for SLI? You never know. 997 Watts with SLI.

Informative article re PSU myths, plus plenty on multi-rail V single rail.

 

http://www.antec.com/PSU/index.php

 

 

Great video Martin! Very informative.

 

 

Vic

Interesting that now with the Corsair Link software, you can switch between multi-rail and single rail. From what I understand of PSU design, in reality there's no such thing as a true multi-rail design, in that power comes from the same single source. It's just that the power is split and each trace individually protected by OCP.

 

I guess all Corsair are doing is reconfiguring the OCP chip to no longer limit each trace and consider them one rail with a higher shutdown threshold.

 

I've always opted for single rail designs, but I am more tempted to go for a multi-rail design this time.

I currently have a 450w power supply. If you say they overspec so much would that be sufficient as the EVGA 980ti classified needs a minimum of 600w according to their site?

The max draw on a 980Ti Classified is 300W. You're probably cutting it too close with a 450W, depending on your CPU and other parts.

 

Cheers!

 

Luke

I'm targeting an Enermax power supply 630w modular at this time. It has a single 12v rail however, will I be making a mistake buying this one or am I on the right track?