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Old November 17th, 2008, 07:19 pm   #1
Rob
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How much powersupply do you really need?

Here is an excellent article on AnandTech debunking power supply myths. The results are quite surprising.

Debunking Power Supply Myths
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Old November 18th, 2008, 12:01 pm   #2
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And a nice calculator that is frequently updated for new parts:

http://www.extreme.outervision.com/p...ulatorlite.jsp
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Old January 30th, 2009, 12:33 am   #3
Colt
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I've always thought there is too much emphasis on requiring a lot of power behind your system. Right now I'm running a fairly up to date PC off a power supply I bought 3 years ago. I don't think I'll ever need to go above 500W tbh.

However I think one caution should be pointed out. Make sure the PSU you purchase really can do it's rated output reliably and consistently. I think it's this fallacy which started the whole exaggerated power demands people face today. People would buy a crap house 600W PSU and be confused when it blew up or failed to power their system. I'm always of the opinion that provided the PSU is a quality component you'll be fine getting away with the minimum.
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Old January 30th, 2009, 08:50 am   #4
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I never spend less than $50 on a power supply, no matter how cheap the rest of the system was. Heck, the unit in my rig was over $100. You get what you pay for. You can tell a good one by the feel, too - a cheapo is light and flimsy feeling, the good ones have some weight to them and feel solid.

Never understood people wanting a 1k watt PSU....
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Old October 10th, 2011, 01:31 am   #5
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Well choosing what power supply you are going to use is really key in terms of making your cpu last longer and run better.

My cpu has a 700w psu installed and I am not sure if that is the right decision when I got it.

I just know that you cannot use a 300w when you have a powerful cpu and a video card at the same unit. Though I have seen that implementation work flawlessly.
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Old August 28th, 2012, 10:47 pm   #6
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yea i was really confused with this in relation to my build. i chose a 650w antec because i knew it was a good brand and far exceeded what i needed. i had no clue what would be appropriate but i knew this would work. it worked fine for me for over a year.
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