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Upgrading to AM3 today, Crossfire depending on PSU

  • Power Supplies
  • Western Digital
  • Components
Last response: in Components
September 29, 2009 7:12:37 PM

Hello all,

Bidding my 939 build goodbye as my AM3 components arrived today!

Phenom II X3 720BE
Gigabyte GA-MA790X-UD4P 790X RT
4 GB G.SKILL DDR2 1066
640 GB Western Digital black
640 GB Western Digital green
Sapphire 4830
2 Lite-On dvd burners (one IDE one SATA)
Multi-card reader in 2.5" bay
HT OMEGA Striker 7.1
Wireless card
4 120 mm fans
550W Corsair PSU

Now my question is: Would my PSU support a 4850 and 4830 in Crossfire, or would it be worth it to get a 4870 or 4890?

More about : upgrading am3 today crossfire depending psu

a b ) Power supply
September 29, 2009 9:07:17 PM

I wasn't aware you could mix different video chipsets in crossfire; power supply is also dependant on your monitor screen size and what resolution setting you use.
September 30, 2009 8:40:31 PM

You can crossfire two different ATI cards (not NVIDIA though). 550W is the minimum recommended PSU for dual 4850's in crossfire. If you crossfire a 4850 with your 4830 you should remain within the power envelope. With that Phenom running 95W, two HDDs and 2 DVDs + 4 case fans, you might be stretching it close, but I wouldn't worry.

I am running an overclocked Athlon (probably around 95W), single 4850, 4HDDs, 2DVD, and 4 case fans on a 450W PSU, so the minimum often works out fine.

edited to remove redundant "howevers"