Radeon HD4890 doesn't clock past 500 MhZ (core only)

[IvanJ]

I figured my setup should pull this no problem - I got 36 amps on the 12v rails. When I use ATI's AutoTune feature on my card, I can't set the clock past 500 Mhz - it doesn't change no matter what I specify. I'm talking about the "Current Values" panel. Any idea?

Thanks...

 

[xc0mmiex]

current values is your current clock... which is throttled down to save power... if you run a stress test and watch the clock at the same time... you will notice then number jump up