What was the clock speed of the PlayStation 2's Emotion Engine?

The PlayStation 2's Emotion Engine had a clock speed of 294.912 MHz. It was the console's main CPU, developed jointly by Sony Computer Entertainment and Toshiba for the PS2's highly specialized hardware design.

The chip used a custom MIPS R5900 core and included vector-processing hardware intended to accelerate 3D graphics, physics, animation, and other game workloads. Its exact frequency is often rounded to 295 MHz or described informally as 300 MHz, but 294.912 MHz is the standard specification for early and original PS2 models.

The Emotion Engine worked alongside the Graphics Synthesizer, the PS2's graphics processor. The Graphics Synthesizer ran at 147.456 MHz—exactly half the Emotion Engine's original clock—and had its own 4 MB of embedded DRAM.

One historical wrinkle is that later PS2 revisions increased the Emotion Engine's clock to 299 MHz. That does not make 294.912 MHz wrong: it is the canonical launch-era figure and the answer normally expected in a general PlayStation hardware quiz.