According to CoinMeta, the devaluation speed of AI chips is fast, and investors need to pay attention. Why can expensive AI chips lose their economic value faster than their planned depreciation schedules? For example, the GPU of NVIDIA can continue to function for many years, but it may become economically obsolete sooner. This difference becomes particularly significant as companies like Microsoft, Google, Amazon, and Meta invest substantial funds in AI infrastructure. Investors often focus on the surface costs of chips and data centers, but depreciation determines how much of these investments will ultimately appear as expenses on the income statement. The physical lifespan and economic lifespan of AI hardware can be quite different; old accelerators may still be technically usable, but their operating costs may become increasingly higher compared to new hardware. The fast product cycle of NVIDIA makes this even more important.