ModelSim PE (Personal Edition) is the industry-leading, Windows-based simulator for VHDL, Verilog, or mixed-language simulation environments offering a very cost effective solution for RTL and gate level simulation;
ModelSim DE (Deluxe Edition) includes full PE functionality plus PSL & System Verilog assertions, Code Coverage, Enhanced Dataflow, Waveform Compare, and support for Xilinx SecureIP as standard;
ModelSim SE (System Edition) combines high performance and high capacity with the code coverage and debugging capabilities required to simulate larger blocks and systems and attain ASIC gate-level sign-off. ModelSim SE offers the ability to simulate very large designs.
怪不得大家都用SE呢。。。
