Will Hyper-V slow down my PC (Windows 8) while not running?

All,

Will Hyper-V slow down my PC (Windows 8) while not running on my PC. I am new to using any type of virtual machine.

I was told that Hyper-V will slow down my PC if Install on my machine even if I am not running it (Hyper-V has a bunch of system drivers running in the background).  

The guy said I should run VMware (I am thinking the guy just loves VMware and hates anything else).

Please provide your comments.

Thanks,                       

Grim