Welcome, @pulga!
AMD APU (GPU and CPU on single die) devices such as my A12-9800 (desktop not laptop) are supported, but the speed-up is modest. The more recent AMD devices that are directly supported by ROCm https://rocm.github.io/ROCmInstall.html would certainly be worth considering if they are within your budget.
Speed gain? I get about 2x and change. Dedicated GPU can get 4x and change. See also these threads:
Using AMD APU as second OpenCL device?
darktable speed (in general, and when using two monitors)