Hmmm.. This was a surprise indeed. I don't think though that you can fix any power issues with throttlestop-software, but still, HWinfo64 shows that CPU alone, or CPU + whatever IA cores stand for, takes 70w under full load (if I'm reading it right, cpu package power ~38w and IA cores power 33w), and there you can add the GPU power consumption, which neither of those readings are presenting, am I right? And we should be pretty close to the 150w, IF the reported 75w is anywhere near what the GPU is actually hogging in this current setup.
But anyway when you push the GTX560M to it's absolute limits, like I've done, the power issues could be the reason for artifacts and other errors when trying to take every drop of juice out of it.
*** G74SX-TZ226V (European model) | Kingston HyperX SSD 120gb Sata-III
"STOCK" BIOS 202 (If it's not broken, why fix it.) *** <- Sold 😞