ATI Radeon HD 6850 stats while watching youtube

I purchased a Sapphire ATI Radeon HD 6850 after asking this very forum.While watching videos on Youtube( the Battlefield 3 Caspian Border Gameplay video) ,Gpu-z shows these statistics-

The gpu memory clock is at 1000.00Mhz.
Is this normal?I don't know how a gpu's memory and core clocks work so any advice is welcome.Also while playing games like Mafia II ,Need For Speed Shift etc.,the core clock is at 775 Mhz and the memory lock is at 1000Mhz.Is this safe/normal?
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  1. Best answer
    Yeah 775mhz (core clock) and 1000mhz (memory clock) are the stock settings of the HD 6850.
    Totally normal.

    When idling, newer graphics cards like the 6850 automatically lower the Core Clock to save power and stay cooler. Which is why it went down to 300Mhz when usage wasn't high.
  2. Best answer selected by absxiith.
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