As far as I know, the G1.Sniper does not have this particular BIOS option. However, MB manufacturers implement this feature in different ways, so you don't have to have this option in your BIOS for a board to support (or emulate) this feature. My knowledge of multicore enhancement is all learned by reading, not practical experience. Its proportionate to load and the number of cores in use. It defeats the integrated voltage regulator and runs the CPU at a constant higher voltage to achieve a minimal performance increase at stock speeds. It requires more cooling since more heat is generated.
Here is a good software you can use for testing:
Heavy Load - by JAM Software You can specify the number of cores you want to test individually. I've seen various articles on the web that state enabling XMP on your board in particular enables this feature. You may have to set the CPU multiplier manually to a value somewhere in the turbo boost range of the processor. If you are using a non-K CPU, start with enabling XMP and see what you get. Again, my knowledge of this feature is limited, as I don't bother trying to squeeze 2-4% performance increase out of my CPU. That's basically what you are looking at. Others here may have more knowledge and experience with this feature. Maybe someone else can provide additional insight.