Is there a faster cpu for my dell t7500?

I am running Solidworks 2014 sp3 on an older Dell T7500 with an X5560 @2.8GHz, 24gb ram and a Quadro FX4800.

I dont really know what options are out there as far as upgrades. Although the machine is a 2009, it runs Solidworks well for the most part. I am looking for faster load time, and quicker rebuilds. Thanks in advance for suggestions

Dave

SolidworksAdministration