I got a question/observation to make. The driver for some reason does not detect my card?s correct frequencies. I got a HD4850 with a modified BIOS (using RBE). It is supposed to run at 700/1100 with 1.1120 volts. The frequencies and voltage are detected correctly under Windows and with fglrx. The radeon driver, however, runs the card at 625/993 (the card?s default clocks) with 1.1120 volts. My question is why. Where is the driver getting those clocks from? Obviously it?s reading the modified voltage right, but not the clocks. Even if I force the "high" profile, the card runs at 625/993.
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Question regarding card frequencies with radeon