Ok, well here it goes: I just recently upgraded my graphics card from a Radeon AIW 9700 Pro 128mb to a Radeon X850Pro 256mb, both are AGP. The switch went flawless, or so I thought, and started fragging away. Well, I noticed a strange problem that seemed random at first, but on further inspection noticed that it would more than likely happen when the X850Pro was rendering fog type effects, like dust, of smoke, but occasionally would happen just because. Now the problem is that my frame rate will just all of the sudden drop tremendously, and the only way to alleviate the problem is to restart the system. After noticing this behaviour, I started to troubleshoot. First I tried Task manager, but that was no help, so then I tried Process Explorer. Basically Process Explorer was showing me 50% CPU utilization with the "Hardware Interrupts". I have tried turning off "Allocate IRQ For VGA" in the BIOS, but that had no effect. I was trying to find a program that would monitor or log Hardware Interrupts in real time, so as to narrow down the device causing the problems (Although I'm sure it's my new graphics card). Any Help would be great, thanks. I just tried flashing my BIOS, and this in turn reset the CMOS settings. Still having the same Problem. My System: Abit IS7 P4 3.06ghz (oc'ed to 3.58ghz) 2x 512mb Corsair XMS LLP (2-2-5-2) at 1:1 with FSB Radeon X850 Pro (oc'ed to 540 core, 550 memory) not the stock cooler of course Creative Audigy 2 Platinum WD 250gb IDE