The i7 and i9 processors also feature Hyperthreading this a process where the number of physical processor cores is effectively doubled so that, a quad-core processor has eight logical processors. The latest processors from Intel feature 'Turbo Boost' dynamic over-clocking meaning that when the CPU senses a maximum load it increases the processor clock speed. Using Intel as an example there are three main processor families that will be of interest to Rhino users. Rendering plug-ins like V-Ray for Rhino, Maxwell and KeyShot will, however, make use of all the available cores. Rhino 6 and Grasshopper are, however, more supportive of multi-threading compared to earlier versions and we expect this situation to improve further as development continues. splitting the calculation between a number of processors. Some complex modelling calculations are linear and do not lend themselves well to multi-threading i.e. Modern processors from the two main manufacturers, Intel and AMD, are multi-core but even with 64-bit operating systems and multi-core processors, modelling applications such as SolidWorks, 3D Studio Max and Rhino will use only one processor core for some modelling tasks. The main specification value that affects CPU performance is the combination of processor clock speed and the number of processor cores – so, for example, a 4GHz six core processor will be faster than a 4GHz four core processor.