A detailed GPU upgrade guide compares H200 and B200 with benchmark code
StasBekman · x · 2026-07-21
A detailed guide on when it is worth upgrading GPUs, aimed at startup teams deciding whether to spend on new hardware.
- Compares key specs such as H200 vs B200 and emphasizes MAMF as the realistic ceiling, not marketing numbers.
- Provides a two-part decision framework: first, whether you need a new GPU type; second, whether the performance gain justifies the cost.
- Includes a worked example using Meta Llama 3.1 8B training and compares FA3 vs FA4.
- Notes that speedup grows with sequence length, but also discusses caveats such as software support, switching too early, and whether the new GPU unlocks configurations the old one cannot run.
- Ends with practical guidance on renting target hardware and applying the framework to your own upgrade decision.
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