650 Watt Corsair PSU, 50 amp Rail, possibility question

I have this specific PSU:

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
9 answers Last reply Best Answer
More about watt corsair rail possibility question
  1. you'll be fine for a quad or even a hexacore no problem
  2. 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?
  3. Best answer
    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.
  4. Alright thanks for the replies. At what point should I even start looking at upgrading my PSU?
  5. when you want an nvidia card or when you wanna do trifire 4850 i'd say
  6. Damn, do Nvidia cards take up THAT much more power?
  7. GTX480's do. And the 470's aren't that much better.
  8. Alright guys, thanks a lot
  9. Best answer selected by Bdonedge.
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