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    FSX (clouds) and the ATI Mobility 5870 performance?

    Discussion in 'Gaming (Software and Graphics Cards)' started by vradev, Mar 19, 2010.

  1. vradev

    vradev Notebook Consultant

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    Hello,
    I have tested FSX on Alienware both M17x-R1 (QX9300 and 4870XF) as well as M17x-R2 (i7-920xm and 4870XF). Basically the game runs great on maximum settings (20-30fsp) with one exception. When you fly throgh clouds overcast and FSX anti-aliasing is turned on, the fps drops significantly from 30fps to 6fps. I've read that it is a known issue with the ATI cards and the FSX clouds. I've tried all kinds of drivers and also using the ATI anti-aliasing instead of the FSX one but no improvement. Also, I've tired disabling the crossfire but results were the same. Only when the AA is turned off the fps don't drop. It is definitely a GPU and not a CPU issue since i've tested it with both - the best mobile c2q and the best mobile i7 and still no difference.
    So I wanted to see if anyone who owns a laptop with the new ATI Mobility 5870 GPU have had a chance to test the sim and see if the clouds issue is still present in the 5xxx series?
    Any info will be greatly appreciated.
     
    vradev, Mar 19, 2010
    #1
  2. n0elia

    n0elia Come on Haswell...

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    n0elia, Mar 19, 2010
    #2