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Yes, I cannot run the core at default clock speeds.
Symptoms:
With a 350 Watt power supply, the computer would get right to Windows XP, then crash immediately. With onboard vid memory turned on, everything went fine (with crappy graphics).
Tech support told me that sounded like a power problem. I put in a 520 Watt power supply. This time, the computer, using 9800 Pro, got into Windows XP. I ran the demo that comes with the card, which promptly crashed the machine. I did this numerous times. The error message that would come up after rebooting from a crash (and continue to throughout my trials below) was that my card overclocked, and it would ask me if I wanted to restore the default settings of the core clock.
Finally, I went into the program that comes with the card which allows you to tweak the card's core clock and memory(?) clock (3DTweaker). I jacked both down. The demo ran then. I then loaded up Day of Defeat (Counterstrike mod). It ran rough. I loaded up Counterstrike itself, where it crashed. I then further lowered the core clock speed.
Eventually, I got it to where I could run both games fine, as well as Combat Flight Simulator 3 and America's Army (fairly demanding games). The graphics on CFS3, however, have problems. For instance, the terrain (at low altitutes especially) becomes flooded with bright colors of white, purple, and yellow - not normal. This occurs over the entire range of graphics and display settings.
From time to time (rare), America's Army will crash my PC, and upon rebooting, it will tell me (like it did back when nothing would run) that my card overclocked.
Back to the power supply issue, I don't see how I would need a personal nuclear power plant to run my card. I'm only running it, the motherboard, a CD/DVD drive, a floppy, and one 80 GB hard drive (nothing too demanding).
Hope this helps you help me! Thanks!
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