I'm using an q9300 that is overclocking to 3Ghz (400mhz FSB). However, windows resource monitor shows that CPU Max Frequency is being used at 100% even when idling, although CPU Load is fairly low. Is this normal!? and if not, what could be wrong? I've tried using Mcafee to scan my computer and I'm pretty sure it's not a virus...
Resource monitor says that the chip is running at 100% max frequency, this just means that it's running at 3ghz. If you had speedstep on it would reduce the speed when idle and actually run the proc at a lower frequency.
(First hand experience:) For example, my AMD Opteron 175 has Cool n' Quiet running on it. When idle it drops from 2.2 ghz to 1.0 ghz and Resource Monitor shows 45% of max frequency. When I play a game the frequency jumps right back up.
You have nothing to worry about. Max Frequency and CPU usage are two different stats.