Hey guys, I made a video about delidding a Xeon X5690 using only a vice! The results where perfect! After cleaning up and successfully testing the first one I went on to the second. Both turned out great and my Mac Pro 4,1 is quite and blazingly fast. The reason why I chose this method is that I did not want to tamper with the Mac itself. I did not like the idea of blades coming near the capacitors and applying heat to the chip so I opted for this method. Not to mention I found this method rather cost-effective. I hope this video helps you guys out with upgrading your Mac Pro 4,1!