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650 Watt Corsair PSU, 50 amp Rail, possibility question

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  • Power Supplies
  • Components
  • Product
Last response: in Components
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May 19, 2010 4:27:38 PM

I have this specific PSU:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

and this is my current setup
AMD Phenom II x3 720 BE
TWO 512MB Radeon 4850 (CrossfireX)
Single 500 GB WD HDD
Gigabyte MA-790XT-4UDP
8GB DDR3 1333Mhz Mushkin RAM

Nothing overclocked

My question, is:
Will this power supply allow me to upgrade my CPU and run with no problems with possible overclocking? My current CPU is 95Watt and I'm looking at a Quad core that is 3.4Ghz and 140 Watts. I know I'm probably close to my limit as it is right now, so I'm not sure if I should look into a new PSU or will this simple upgrade be fine? Thanks

More about : 650 watt corsair psu amp rail possibility question

a b ) Power supply
May 19, 2010 4:33:05 PM

you'll be fine for a quad or even a hexacore no problem
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May 19, 2010 4:36:07 PM

obsidian86 said:
you'll be fine for a quad or even a hexacore no problem


Okay thanks! How much upgrade headroom am I allowed with this PSU? Basically at what point should I upgrade it? Like when will my limit be reached? With a lot of fans if I decide to upgrade my case?
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a c 144 ) Power supply
May 19, 2010 4:45:55 PM

Fans use almost no power. Figure 3 or 4 fans per 12 volt amp.

My 12 volt power consumption estimates:
140 watt CPU: 12 amps
2 4850's : 16 amps
1 HD & 1 optical : 2 amps
Fans : 1 amp

Memory : 12 amps at 3.3 volts
Digital logic : 5 amps at 5 volts.

High side estimate of power consumption is about 320 watts.

You will be able to support a lot of fans.

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May 19, 2010 4:50:47 PM

Alright thanks for the replies. At what point should I even start looking at upgrading my PSU?
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a b ) Power supply
May 19, 2010 4:54:17 PM

when you want an nvidia card or when you wanna do trifire 4850 i'd say
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May 19, 2010 5:01:07 PM

Damn, do Nvidia cards take up THAT much more power?
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a c 144 ) Power supply
May 19, 2010 5:01:57 PM

GTX480's do. And the 470's aren't that much better.
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May 19, 2010 5:07:10 PM

Alright guys, thanks a lot
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May 19, 2010 5:08:57 PM

Best answer selected by Bdonedge.
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