Pretty crappy Actually : AMD Athlon II X2 245 2.9 GHz (old dualcore Cpu) 4 GB Ram (32 bit win 7) Geforce GTX 460 GPU (1 GB) I use gamebooster to boost my mudbox , anyway that mesh is at 1,77 million polys and I think if I raise the subdiv level higher my mudbox will just freeze / crash Edit : sub-d lvl 7 can still be calculated without freezing mudbox , turning aorund the sculpt get's laggy though but that's okay for a 7 Million poly Mesh I guess this was unboosted btw I highly doubt that my system can take another level of subdivision without freezing