I have a Dell Precision 690 with 16 gigs ram, Quadro 4600 Video, Dual 3.73 Xeon Processors. For performance would you use Multi-core and Hyper-threading in Bios for Solidworks 2015
It depends on what features of SW you need to use most. SW itself (like several 3D modelers) is not written to take advantage of multiple cores. Performance of SW drawings, Photoview, Simulation can be improved with multicores.
The question on whether to disable HT or not no longer matters if you're using a Intel Core based CPU. It was really only a problem when HT was first introduced. Since your Precision 690 is getting long in the tooth, it depends on your specific Xeon models. If that system was out around the same time HT was being first introduced, then disabling HT could improve performance (use the SOLIDWORKS RX add-in Benchmark test to confirm).
I would recommend viewing Charles Culp's post about hardware recommendations, as he has the most information specific to component choices and for the latest versions of SOLIDWORKS.
March 2014 - Suggested Computer Specs
With the latest Intel CPUs leaving HT on is recommended because it does not slow things down, but simply makes overall multi-tasking faster.
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