The same SKU on a GPU can perform differently depending on how the manufacturer powers and cools it [0], and nVidia's naming shenanigans don't help either [1].

[0] https://www.digitaltrends.com/computing/laptop-gpu-power-lim... [1] https://coconote.app/notes/4c75b7a0-eb41-435d-85ee-55ae2dd8d...

And even worse it's surprisingly hard to find out what power budget is assigned to the GPU/ CPU or combined on spec sheets.