Thx for the link to this great App, it has really helped me to see exactly how my 15" MBP`s are managing temperature; My Late 2011 2.4 i7 very clearly heavily throttles under high load up to the point CPU frequency reduces to 2.3GHz @ 96C in order to lessen the thermal load, which is no real surprise.
Now the quandary my 2.3 base 15" absolutely does not throttle at all, even when fully maxed out with CPU temp`s over 90C and GPU peaking at 93C, it will solidly pump out 3.10 GHz all day, peaking at 3.16GHz, no shutdown`s, no restart`s, no SMC reset`s. The CPU scales perfectly through it`s full operating spectrum, my Retina has all the latest OS X and EFI updates installed. So why do so many have issues related to throttling? Personally i have no idea, nor do i have any explanation why my own 2.3 Retina does not throttle. Thanks to Intel`s "Power Gadget" there is no doubt in this, i used Bresink`s Temperature Monitor, UltraFan & SMC Fan Control to verify the thermals, loaded both systems with Dev/Null and same games to push the CPU/GPU thermals.
For those having issue with throttling I recommend that you try UltraFan, it will help to keep your Retina`s internals below 90C, for my test`s i closed the App so CPU & GPU would exceed the 80C - 90C mark, a target setting of 65C works well, ambient temp @ 26C.