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650 Ti Boost SLI + FX8320 I have a question about PSU

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  • Power Supplies
  • Power
  • Graphics Cards
  • Components
  • SLI
  • Boost
  • Build
Last response: in Components
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March 6, 2014 10:18:05 AM

Hi guys im gonna ask 1 question about my new SLI build

Here some components of my PC
- AMD FX8320
- Asus GTX650 Ti Boost SLI
- 128 GB SSD
- 500 GB HDD
- 212X Coolermaster Cooling
- 8GB DDR3 1866mhz
- Asus Sabertooth r2 990fx
+ And ofcourse Corsair VS550 PSU

I did SLI today and now my PSU's FAN speed is annoying(in-game) without SLI its ok and quiet, but in AC4 Black Flag with 1080p + Full details + TXAA 4x after like 15 min PSU's fan speed sound getting annoying i mean so much volume on it

I thought not enough power for my system or what can be problem is ?
If it is about my PSU what can i buy for this system with perfect power 650 W or 750 W

Thanks for the answers :) 

More about : 650 boost sli fx8320 question psu

a b ) Power supply
a b U Graphics card
March 6, 2014 11:44:02 AM

Your PSU is likely getting too hot. The 650 TI Boost SLI configuration requires 48A on the +12V rail(s). The VS550 provides 42A, which is not enough. The VS550 is also entry-level so it probably uses a cheaper fan that is not as good for cooling. I'd recommend this PSU for you, the XFX PRO750W Core Edition: http://pcpartpicker.com/part/xfx-power-supply-p1750snlb...
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a c 120 ) Power supply
a c 147 U Graphics card
March 6, 2014 11:51:01 AM

The VS is not a very good PSU for SLI, and you're cutting it close already on wattage. On top of that, you don't have enough amperage available on the +12v rail. A 750w PSU would be best for SLI, to give you room for overclocking and longevity, but if that's too expensive a 650w would be better at least.

http://www.ncixus.com/products/?usaffiliateid=100003150...
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March 6, 2014 3:19:12 PM

thanks for your answers it was really helpful :) 
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a c 120 ) Power supply
a c 147 U Graphics card
March 6, 2014 5:42:07 PM

No problem, glad I could help :) 
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