I made a benchmark (doing calculations, accessing allocating and using memory, etc.) and ran it on 3 laptops (all of them run KSP and heavier games quite confortably) and on 2 smartphones: a galaxy s7 edge and a galaxy s9+ edge. The benchmark used only one core. Both smarphones were faster than the laptops and also have decent GPUs. Besides, the smartphones have more cores (8 cores). I tried a 3D realistic game on my cellphone and it was smooth, even simulating water.