CPU throttle

Hey Guys, I just recently purchased an XPS 13" 9333 (13ULT-7144SLV). The laptop has the following specs: i7-4510U CPU 8GB RAM 256 SSD Running Windows 8.1 I was just curious as to why the CPU, when under full load, is capped @ 75% utilization (speed @ ~1.95 GHz) when the laptop is running on...