Horrible FPS and no sound in game - Crossfire 5850s

I just added a second Sapphire HD 5850 Xtreme to my system yesterday. The Crossfire bridge is connected. My MOBO is a MSI 870-G45.
I went through the automatic setup through CCC. Everything seemed ok. I fired up Battlefield, Bad Company 2 to test out my new setup and it wouldn't play sound! I restarted my system, tried again. No sound in game. I have sound in Youtube and whatnot though... So I figured it was the game. I fired up Brink, and no sound either. So I went back into Bad Company to with FRAPS on to see if my frame rate was at least decent. Loaded into a match and found that my FPS would only go up to the mid 20s and would drop down to 5 FPS under light load!!!
I tried reinstalling drivers and any patches I could find. What is going on?!?! I thought Crossfire was easy and plug and play.

Please help guys. I'm starting to get disheartened.
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More about horrible sound game crossfire 5850s
  1. Oh ya, Corsair Builder Series CMPSU-600CXV2 600W ATX Power Supply Active PFC 120MM Fan power supply
  2. It could be your PSU.Those CX series from Corsair is more for the budget builder and isn't some of their quality units.It's acutally only capable of deliever 480 watts.And a typical system power draw with a 5850 crossfire is right around 470 watts.

    What are your full system specs?
  3. the second slot on that board is 4x not 8 or 16. what that will do to xfire I don't know but I don't think it would be primo. BBC2 is good on a quad core, don't know what you run it on. Brink I don't know. PSU has 45amps. might not be enough. ( forget the "watts" thing )
  4. Has anyone had issues with no sound in game while in crossfire? It seems kinda weird that there is sound in windows but none in game.
  5. What are your full system specs? (CPU,RAM,Mobo,etc.)

    All of this could easily be cause by incifient power.
  6. -AMD Phenom II 810 quad core cpu 6mb cache 2.6 (Overclocked to 3.2 stable)
    -2x4GB Corsair vengence 1600
    -1 TB Seagate 7200 rpm hard drive 32mb cache
    -Sapphire HD 5850 Xtreme video card 1GB ddr5 (725 core/4000 mem) X2 Crossfired
    -MSI 870-G45 MOBO
    -Corsair Builder Series CMPSU-600CXV2 600W ATX Power Supply Active PFC 120MM Fan power supply
    -120mm silverstone rear fan, 120mm 3 speed front fan
  7. It turns out it was bad drivers or dirty windows, or both. I formatted and reinstalled Windows 7 and all drivers. It works awesome now! 100 - 130 FPS in Medal of Honor, 80 - 90 FPS in Bad Company 2! Thanks for your input guys.
  8. Best answer
    Welcome.Glad you got it fixed.
  9. Best answer selected by Full_out.
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