Agreed, a GPU comparison would not be sufficient to explain all the differences. The top half of the order in the specviewperf solidworks test does not appear to be correlated with base or turbo freq, so it does not appear to test CPU compute performance. This top half order appears somewhat random within several categories for configurations with the same GPU. The socket 2011 processors with 4 memory channels are at ~12fps and the next group with 2 memory channels is all at ~10.5fps. Maybe they are constrained by the memory and I/O bandwidth required to copy data from memory to the GPU. If the laptop copies this data using PCIe3 between the CPU and GPU, that might explain how the laptop with PCIe3 but lower memory bandwidth, lower CPU frequency, and weaker GPU is able to outperform several desktop processors with PCIe2 but higher CPU frequency, higher memory bandwidth, and stronger GPU.