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Thread: fglrx on Fedora 20

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  1. #9
    Join Date
    Aug 2013


    Quote Originally Posted by Sonadow View Post
    The 5770 is supported by the open r600g drivers. and r600g is known to be almost at performance parity with Catalyst (about 70 - 80%). So there is no reason to need Catalyst for your card at all.

    If it were a Southern Islands (7XXX series) or Sea Islands (8xxx series) then using Catalyst makes sense. But not for the Evergreen series.
    Two reasons:

    1. The DPM fails to switch when you have dual monitors hooked up to the card. So, my fan runs at full speed and sounds like a tank, and the card gets hot.

    2. I do not believe that r600g is at 80% performance parity with catalyst. The proprietery drivers gives 50 FPS constantly on flightgear and the r600g driver gives 10-30FPS. When I work on some 3D modeling software inside virtualbox, it lags. It lags in games inside virtualbox. Lag lag lag lag I am tired of this lag.

    However, that is not even the main point. The old nvidia card gives me 30-40 FPS - so if Radeon's performance is this poor, then AMD should be concerned. The nvidia card does not lag all when I am using gnome shell, or for firefox scrolling or anything else actually. It is very very smooth.

    It scores 80-110% of catalyst paared with working DPM and video acceleration, so why bother?
    As I said, DPM doesnt work at all if you have GDD5 memory and use dual head. It is always stuck on power level 2.
    Last edited by xtachx; 12-26-2013 at 10:38 PM.

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