thats one of the big questions still being looked at ?? It seems to happen randomly, and has happened without observable heat issues, and with different card types and drivers ???Quote:
Originally posted by HaLDoL
But what is triggering it? I think it's like XanderF says temperature related.
if you want to see a demonstration of it in action, use rivatuner, select to use the hardware monitor (shows core and memory speeds/temps in real time), and overclock your core 3D speed by a few MHz, run the test and apply. You will note that the core has gone to 3D speed during the overclock test phase. After about 30 secs it will drop from the 3D speed to the throttling speed of 376.7MHz, which it will hold for about 25 secs, and then drop to 2D speed of 300MHz. If you were monitoring the core volts, you would have seen approx 1.2v in 2D, 1.5v in 3d and 1.3v during throttling mode.
Once triggered, in this case by rivatuner, it appears to always drop core speeds to throttling speed whenever a 3D to 2D switching condition/selection occurs. To reset the triggered condition you must reboot ??
