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How much watts do I need?

Last response: in Components
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April 15, 2012 11:40:48 PM

As the title say, how many wattage would I need for my build?

cpu: i5 3570k (will be oc'd to 4.5 or 4.6)
mobo: asus maximus gene v
ram: 2x4gb ripjaws x 1600 cl9
cpu cooler: noctua nh-u12p se2
fans: around 5 or 7 fans
video card: sapphire 7850 oc edition

More about : watts

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a c 128 ) Power supply
a c 117 à CPUs
April 16, 2012 12:51:40 AM

Without a desire to X-fire your video card, a 550-600W would work (although I believe your video card documentation will suggest 600W)
If considering adding a second 78xx in XFire, I'd say750-800W
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a c 694 ) Power supply
a c 850 à CPUs
April 16, 2012 1:01:41 AM

C12Friedman said:
Without a desire to X-fire your video card, a 550-600W would work (although I believe your video card documentation will suggest 600W)
If considering adding a second 78xx in XFire, I'd say750-800W

From XFX HD7850 "Minimum of a 500 Watt power supply"
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April 16, 2012 1:04:08 AM

no hard drives or SSD's?
or both?
Optical drive?
any other add-on card?
what about possible upgrades down the line?
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a c 110 ) Power supply
a c 185 à CPUs
April 16, 2012 1:05:31 AM

Corsair tx650w should serve you well. You always want some headroom in case of oc, extra parts, and crossfire.
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April 16, 2012 2:29:13 AM

drwho1 said:
no hard drives or SSD's?
or both?
Optical drive?
any other add-on card?
what about possible upgrades down the line?


Oh sorry about that, there will be a 1 or 2 TB HDD and an optical drive. I also plan to add a mini PCIE wifi card that can be placed in the mpcie slot on the maximus gene v board.
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April 16, 2012 3:24:25 AM

My simple suggestion is to look for each component watt requirement, add them up and then simply add some more for future upgrades.

If there is one component that I will never skimp on is precisely the power supply, after all it is the one component that will "juice" every other component on your system.

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April 16, 2012 3:59:53 AM

I also forgot to say that I would want to use a modular psu for better cable management.
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April 16, 2012 4:11:14 AM

Seasonic M12II 620W will be a good choice.
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a b ) Power supply
a b à CPUs
April 16, 2012 4:25:58 AM

I would use this link to estimate
http://extreme.outervision.com/psucalculatorlite.jsp
For the processor estimate by putting in a i5-2500k and put 1.4v (highest volts I would use for processor life, any higher could kill it faster) and then the speed of 4500-4600MHz. This should actually use more wattage than the new more power efficient Ivy Bridge CPU so you should be good (better to be a bit over than under).
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April 16, 2012 4:54:58 AM

Best answer selected by bloodyredd.
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a b ) Power supply
a b à CPUs
April 16, 2012 3:53:00 PM

This topic has been closed by Mousemonkey
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