I just upgraded from a dual core E6850 (3.0ghz) to a quad Q9550 (2.83ghz) and so far the performance improvement has been minimal - I'm seeing slightly higher FPS and my toons aren't breaking off of /follow in Northrend but when I look at my task manager, performance tab it shows cores 1 and 2 maxed out but cores 3 and 4 barely being used. Overall CPU usuage varies between 55-75% with 5 instances of WOW.

Is there a way to spread out the usuage so all 4 cores are being evenly used?

My other system specs are 8 gigs of DDR2 ram and a GeForce 8800 GTS GPU w/ 640 megs of video ram.

CPU temps run between 38 and 50 degrees C after I replaced the stock HSF with a artic cooler freezer extreme (with the stock cooler it ran at 45 degrees at Idle and 75 with just one instance of wow, causing warning beeps.

Thanks,

-Clov