Now we can see that each SM has four texture units associated with it. More unconventionally, each SM also hosts a geometry unit, which Nvidia has creatively dubbed a "polymorph engine." Since the GF100 has four GPCs and 16 SMs, it has a total of 64 texture units and 16 polymorph engines. The Fermi architecture detailed here is scalable along several lines: variants could be made to have fewer GPCs and fewer numbers of SMs within each GPC. We can surely expect to see smaller chips based on this architecture that have been scaled down in one or both ways.