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psu wattage

zkeck12
By zkeck12
in Power Supplies
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Hi I have been told a couple times that if you go a litte overkill on your psu wattage that it Will not affect anything and that it Will just cost more. I just wanted to double check that this is true. My build is: (Intel I5 4690k, gigabytes gtx 970, Asus maximus z97 vii hero, g.skill ripjaws x series 16 gb, corsair h100i, Samsung 850 evo 250gb, nzxt s340) and then this is the power supply I want it's the evga g2 750 watt/ http://m.newegg.com/Product/index?itemnumber=17-438-017

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While what you said is true, all power supplies have an efficiency curve, such as this one (but they vary from psu to psu) :

 

load_efficiency_curve.jpg

 

By getting power supply that is a bit overkill, the efficiency won't be at it's peak, and you'll be paying slightly more in electricity

It won't damage components or anything like that though

Specs: CPU: AMD FX 6300 Motherboard: Gigabyte 970A DS3P RAM: HyperX Fury 16GB 1866MHz GPU: MSI R9 270 OC edition Case: Sharkoon VS3-S SSD: Samsung 840 EVO 120GB HDD: 1TB Caviar Blue PSU: Corsair CX500W

*If I say something that seems offensive, please don't take it seriously, it was most likely meant as a joke/sarcastically*

 

 

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While what you said is true, all power supplies have an efficiency curve, such as this one (but they vary from psu to psu) :

 

load_efficiency_curve.jpg

 

By getting power supply that is a bit overkill, the efficiency won't be at it's peak, and you'll be paying slightly more in electricity

It won't damage components or anything like that though

 

The 970 has a minimum wattage requirement of 500 watts. having 750 watts means you just have some expandability for future upgrades. I.E. second GPU, newer GPU with higher requirements.

Yes the reason why I wanted to get this one is because if I ever did sli or upgrade in the future I wouldn't have to buy another psu... and also because it is only $10 more than a 650 watt one

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The 970 has a minimum wattage requirement of 500 watts. having 750 watts means you just have some expandability for future upgrades. I.E. second GPU, newer GPU with higher requirements.

Ignore graphics card quoted wattage requirements--they are highly inflated to cover their butts.

If you ever need help with a build, read the following before posting: http://linustechtips.com/main/topic/3061-build-plan-thread-recommendations-please-read-before-posting/
Also, make sure to quote a post or tag a member when replying or else they won't get a notification that you replied to them.

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