Emotion Engine

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Also known short as EE.

The Emotion Engine used in Playstation 2 gaming console is a central processing unit developed and manufactured by Sony Computer Entertainment and Toshiba. it runs at the Clock speed of 294.912 mHz which is 2x the clock speed of the GS. It was also used in early PlayStation 3 models sold in Japan and North America (Model Numbers CECHAxx & CECHBxx) (as part of EE+GS) to provide PlayStation 2 game backward compatibility. Mass production of the Emotion Engine began in 1999 and ended in late 2012 with the discontinuation of the PlayStation 2. The first revision released in retail consoles, CXD9542GB, is known to have been manufactured using a 250nm process, contain 13.5 million transistors and consume 18 W of power.

There have been die-shrinks and optimizations over the years.


  • 1.4: CXD9542GB
    • 180 nm process, 224 mm² die size
    • 18 W power consumption
    • Copyright date: 1999
    • Used on motherboards: GH-001, GH-003
  • 2.0: CXD9615GB
    • 110 mm² die size
    • Copyright date: 2000
    • Used on motherboards: GH-004 - GH-016, GH-015 might contain either CXD9615GB or CXD9708GB
  • 3.0 / 3.1: CXD9708GB
    • 73 mm² die size
    • Copyright date: 2001
    • Used on motherboards: GH-015 - GH-032-11 (at least), GH-015 might contain either CXD9615GB or CXD9708GB
  • 3.0 / 3.1: CXD9832GB
    • Copyright date: 2001
    • Used on motherboards: ? - GH-32-54 - ?
  • 4.3: CXD2976GB
    • Copyright date: 2007 or 2008
    • plastic case, also includes the RDRAM and IOP with IOP's RAM and SPU2 with SPU2's RAM
    • Used on motherboards: GH-061-12 - GH-072-42, thus used in every 79XXX and 90XXX slim PS2


Emotion Engine has a 1.8 V (2.0 V on CXD9542GB) serial interface with hardware flow control (RXD, TXD, RTS, CTS) as well as a JTAG port. Both do also still exist on EE+GS.