Sensei review: Gorgeous Mac performance utility hamstrung by Thunderbolt

Prior to the arrival of Mac OS X in 2001, software for keeping tabs on CPU usage, managing extensions, or even doubling available virtual RAM allowed power users to monitor or tweak system performance. While such hacks are largely unnecessary on modern Macs, a few apps still carry a torch for this bygone era.Mac optimization utility Sensei is the latest, probing deeper than the already comprehensive real-time data of competitor iStat Menus, while also supplying a generous toolbox of disk cleani