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What kind of PSU would this build require?

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  • Power Supplies
  • Components
  • Product
Last response: in Components
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January 16, 2012 1:02:28 AM

I'm building a Gaming/HTPC hybrid, and I need to know how many watts would it take to run it.
The specs:

A 500GB 7200RPM HDD
A Ati Radeon HD 6850 (no overclock)
A 65w Sandy Bridge Socket 1155 Core i3-2100
A Mini-ITX motherboard
A CD/DVD Burner/reader
4GB of DDR3 1333 RAM

Thank you very much!

More about : kind psu build require

a b ) Power supply
January 16, 2012 1:22:13 AM

There is a PSU calculator here. You can enter all the hardware components you expect to have, and it will give you a reasonable estimate of the watts you will need. Buy a quality PSU from a reputable manufacturer, at least 80% efficient, Bronze.
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a c 275 ) Power supply
January 16, 2012 1:24:31 AM

You could use a quality 400W+ unit.
Best bet is a good 500W imo.
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January 16, 2012 1:29:01 AM

treefrog07 said:
There is a PSU calculator here. You can enter all the hardware components you expect to have, and it will give you a reasonable estimate of the watts you will need. Buy a quality PSU from a reputable manufacturer, at least 80% efficient, Bronze.

I tried it, and it said I need about 372 watts. Would that be correct? It seems kind of low
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a c 275 ) Power supply
January 16, 2012 1:36:50 AM

xpeh said:
I tried it, and it said I need about 372 watts. Would that be correct? It seems kind of low

Sounds right to me!
That's why a decent 400W- 500W unit is a good fit.
Good cheap units.
Seasonic SS-400ET 400W
http://us.ncix.com/products/?sku=30145&vpn=SS%2D400ET&m...
CORSAIR Builder Series CX430 V2
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
COOLER MASTER GX 450W
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
XFX 450W Core Edition
http://us.ncix.com/products/?sku=63238&vpn=P1450SX2B9&m...
OCZ ModXStream Pro 500W Modular = quiet and semi-modular.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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January 16, 2012 1:38:39 AM

davcon said:
Sounds right to me!

So would a 400 watt psu not give enough headroom for a minor overclock> I don't want to push the power supply to the limits. Would an Antec Greenwatts 430w PSU be good for the build?
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a b ) Power supply
January 16, 2012 1:42:30 AM

It does seem low, but today's hardware is more energy efficient than older hardware.

If you are not ever going to crossfire, look at a PSU with 550W to 650W. This would also run several hard drives. PSUs lose efficiency and power overtime, so those would give you plenty of cost-efficient power for a long time.
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January 16, 2012 1:45:53 AM

treefrog07 said:
It does seem low, but today's hardware is more energy efficient than older hardware.

If you are not ever going to crossfire, look at a PSU with 550W to 650W. This would also run several hard drives. PSUs lose efficiency and power overtime, so those would give you plenty of cost-efficient power for a long time.

Oh okay then. Can you recommend a good 500-600 watt psu for under 70 dollars? The cheaper the better, as long as it's good.

How about this power supply? - http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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a c 275 ) Power supply
January 16, 2012 2:00:39 AM

Yeah the XFX units are good choices = 5yr warranty.
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a b ) Power supply
January 16, 2012 2:09:24 AM

The one you linked looks fine. Others you might want to look at are here. These are all quality manufacturers, but read the reviews and check for rebates and instant discounts/free shipping when you order.
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February 6, 2012 8:41:41 PM

Best answer selected by XPEH.
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a b ) Power supply
February 6, 2012 8:49:55 PM

This topic has been closed by Mousemonkey
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