If you're using iterative solvers, compare memory bandwidth first, then cache. Flops aren't very important unless you use sparse direct solvers or have SNES residual/Jacobian evaluation that is expensive and has been written for vectorization.
If you can get the 6650U with LPDDR5-6400, it'll probably be faster. My laptop is the previous generation, 5900HS. "D.J. Nolte" <d.j.no...@rug.nl> writes: > Hi all, > I'm looking for a small laptop which I'll be using (also) for small scale > PETSc (KSP & SNES) simulations. For this setting performance is not that > important, but still, I wonder if the community has any experience with AMD > Ryzen CPUs (specifically 5 Pro 6650U) CPUs compared to Intel i7 12th gen. > Do I have to expect significant performance differences? > > Thanks! > > David