It stood for — Living Silicon.
Variations in temperature, chemical purity, and imperfections in the mask result in transistors that behave slightly differently. AMD Ryzen Silicon Tester -AMD V F-
How enthusiasts use these testers to apply "Negative Offsets" in BIOS to reduce heat and increase clock headroom. It stood for — Living Silicon
Requires higher voltage to stay stable at similar speeds, often generating more heat. often generating more heat.