The CX CAS is allowed in the SAT, but you should check whether your standardized test allows the calculator first because some tests, like the ACT, do not allow the TI-Nspire CX CAS. The TI-Nspire CX and TI-Nspire CX CAS are similar to each other with a few differences. We will cover both these similarities & differences in this review article. In this article, we will discuss the following things regarding each calculator:īoth the TI Nspire CX CAS and Nspire CX have a distinctive design which differentiates them from other calculators as well as their predecessors.