I'm considering upgrading my current simulation computer from a 4-core machine to an 8-core machine (both are single processors)...I am wondering if this will provide any benefit when using the linsolve function. This is used repeatedly through the simulation. When running the code currently, and monitoring the system performance, it seems like all four cores on the CPU are being utilized, thus I would assume that somehow MATLAB is utilizing all 4 cores for the linsolve computation. However, it would be nice to have a more concrete answer than "kind of seems like it...". If it helps...I beleive the method of solving the specific matrices I'm looking at here, within the linsolve fuinction, is the QR factorization method.