You are absolutely right, I apologize. I think I was talking about A100 prices (which are still only 6 years old) and conflated a few different things there.

You are absolutely right, I apologize. I think I was talking about A100 prices (which are still only 6 years old) and conflated a few different things there. But A100 rental prices have climbed since 2024 (as far back as free account records show on https://semianalysis.com/gpu-pricing-index/ https://semianalysis.com/gpu-pricing-index/). Coreweave has announced they will keep A100s in use until 2029 which will be 9 years old then. I think that is where I got the 10yo number I had in my head. On TPUs, I was also wrong on that, but less so. The quote is: "seven and eight-year-old TPUs have 100 percent utilization."[1] That was last year, so 8 or 9 year old TPUs now (assuming it is still true). Slight exaggeration there and I wish I'd looked it up before posting. Despite this, my point (that 3 year depreciation schedules for GPUs was too short) remains correct I think. [1] https://www.datacenterdynamics.com/en/news/google-says-tpu-demand-is-outstripping-supply-claims-8yr-old-hardware-iterations-have-100-utilization/ https://www.datacenterdynamics.com/en/news/google-says-tpu-d...