What was the original PlayStation's CPU clock speed?

The original PlayStation's CPU clock speed was 33.8688 MHz.

The console used a customized 32-bit RISC processor derived from the MIPS R3000 family. Sony selected the architecture for its ability to handle the 3D calculations and game logic needed by the emerging fifth generation of consoles.

The processor operated alongside dedicated graphics and geometry hardware. That division allowed the PlayStation to produce texture-mapped 3D visuals while keeping the main CPU focused on game code, audio coordination, and system tasks.

The precise 33.8688 MHz figure is a hardware clock specification, not a measure of overall game performance. Different consoles can have different clock speeds yet produce different results because memory bandwidth, graphics processors, and software efficiency also matter. The figure is therefore best used to identify the PlayStation's documented processor specification.