But then you've spent more money. You could have just bought more hardware in the future.
For a fixed budget, assuming that Moore's Law still holds (dubious, these days), you should wait until the computation will take 26 months on hardware purchased within that budget [0].
For a fixed budget, assuming that Moore's Law still holds (dubious, these days), you should wait until the computation will take 26 months on hardware purchased within that budget [0].
[0] https://arxiv.org/abs/astro-ph/9912202