Intel I5 2500/3570's are quite common for gamers and do not use core parking.. so it won't do anything for those. I believe the I7's use it but it would likely only make a difference on older Intel cpu's as the new ones seem to do rather well with power management options like core parking. Also I was watching the CPU usage in performance monitor and only one core is spiking while PS2 is active. At least on my system which for reference has an Intel I5 3570k in it. I know my AMD FX 8120 has core parking but I don't have PS2 installed on that machine currently.