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Tom's Hardware > Forum > CPU & Components > Power Supplies, Cases & Mods > [Solved] What kind of PSU would this build require?

[Solved] What kind of PSU would this build require?

Forum CPU & Components : Power Supplies, Cases & Mods [Solved] What kind of PSU would this build require?

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xpeh   01-16-2012 at 04:02:28 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!

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treefrog07   01-16-2012 at 04:22:13 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.

Message quoted 1 times
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davcon   01-16-2012 at 04:24:31 AM

You could use a quality 400W+ unit.
Best bet is a good 500W imo.

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xpeh   01-16-2012 at 04:29:01 AM

treefrog07 wrote :

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

Message quoted 1 times
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davcon   01-16-2012 at 04:36:50 AM
Best answer

xpeh wrote :

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=3 [...] lectronics
CORSAIR Builder Series CX430 V2
http://www.newegg.com/Product/Prod [...] 6817139026
COOLER MASTER GX 450W
http://www.newegg.com/Product/Prod [...] 6817171060
XFX 450W Core Edition
http://us.ncix.com/products/?sku=6 [...] acture=XFX
OCZ ModXStream Pro 500W Modular = quiet and semi-modular.
http://www.newegg.com/Product/Prod [...] 6817341016

Message quoted 1 times
Message edited by davcon on 01-16-2012 at 04:56:50 AM
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xpeh   01-16-2012 at 04:38:39 AM

davcon wrote :

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?

Reply to xpeh
treefrog07   01-16-2012 at 04:42:30 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.

Message quoted 1 times
Reply to treefrog07
xpeh   01-16-2012 at 04:45:53 AM

treefrog07 wrote :

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/Prod [...] 6817207013


Message edited by xpeh on 01-16-2012 at 04:51:00 AM
Reply to xpeh
davcon   01-16-2012 at 05:00:39 AM

Yeah the XFX units are good choices = 5yr warranty.


Message edited by davcon on 01-16-2012 at 05:01:05 AM
Reply to davcon
treefrog07   01-16-2012 at 05:09:24 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.

Reply to treefrog07
Mousemonkey   02-06-2012 at 11:49:55 PM

This topic has been closed by Mousemonkey

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