You can purchase a Stata/MP license for up to the number of cores on your machine (maximum is 64).

Stata/MP, Stata/SE, and Stata/IC all run on any machine, but Stata/MP runs faster. The goal of this video is to get you up and running using STATA for data analysis in just 15 minutes. Stata/IC can have at most 798 independent variables in a model. The maximum number of observations is 2.14 billion. Stata/IC allows datasets with as many as 2,048 variables. Stata/SE can analyse up to 2 billion observations. Stata/SE and Stata/MP can fit models with more independent variables than Stata/IC (up to 65,532). With more than two cores or processors, Stata/MP is even faster. On dual-core chips, Stata/MP runs 40% faster overall and 72% faster where it matters, on the time-consuming estimation commands. This includes the Intel i3, i5, i7, i9, Xeon, and Celeron, and AMD multi-core chips. Virtually any current computer can take advantage of the advanced multiprocessing of Stata/MP. Stata/MP is the fastest and largest edition of Stata.

Is my stata mp using 4 cores