Intel says elevated voltage causing "instability" in Core CPUs, fix in August
tomshardware.com
tomshardware.com
Intel I hope the lawsuit is so big that it takes you down, not gonna happen but dreaming is free.
Also a bunch of the power, voltage and frequency stuff depends on the motherboard BIOS settings and you may be surprised if you don't follow the enthusiast circles just how much influence the BIOS has over the CPU power, frequency, etc. Different motherboards can also net you quite different performance, both by default and by tweaking settings, plus may have cleaner or less clean power, etc.