It's been a while since anyone has put together a beginners guide to LN2 benchmarking. If you have dreams of becoming a benchmarking badass, this guide should help you get started. If you are reading this, then maybe you are ready to make the jump into subzero benchmarking or just interested in a simple how to. Subzero benchmarking is where you use LN2 (Liquid Nitrogen), DICE (Dry Ice), Phase change units or even, for those daring enough, LHE (Liquid Helium). The main focus of this guide is to show you what you need to start of on LN2 or DICE. We will look at what is needed and some terminology on CPU and Graphics subzero overclocking and benchmarking.