is it normal for a computer to lag when the CPU is high?

I was encoding with handbrake today, i decided to go onto firefox, and the mouse and even trying to drag a window was lagging all over the place. Is this normal when my CPU is under a lot of strain, to make the PC lag. Shouldn't i be able to multi-task, or do i have to leave a extremely high CPU resource let it do its work?

My specs

Core 2 duo E7500 2.93 GHz

2GB RAM DDR3

ATI radeon ATI Radeon HD 4300/4500 Series

Samsung HD103SJ F3 HDD

1 Answer

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  • Anonymous
    9 years ago
    Favorite Answer

    Yes, high CPU usage will lag even the best computers.

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