PlayStation technical specifications

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This article is about the technical specification of Sony's original PlayStation console. For technical specifications of Sony's later home consoles, see § See also.

The PlayStation technical specifications describe the various components of the original PlayStation video game console.

Central processing unit (CPU)[edit]

LSI CoreWare CW33300-based core[1]
Geometry Transformation Engine (GTE or Cop2)[citation needed]
Motion Decoder (MDEC)
  • Also residing within the main CPU, enables full screen, high quality FMV playback and is responsible for decompressing images and video into VRAM.[2]
  • Operating performance: 10 MIPS
  • Documented device mode is to read three RLE-encoded 16×16 macroblocks, run IDCT and assemble a single 16×16 RGB macroblock.
  • Output data may be transferred directly to GPU via DMA.
  • It is possible to overwrite IDCT matrix and some additional parameters, however MDEC internal instruction set was never documented.
  • Features:
    • Compatible with MJPEG and H.261 files
    • Directly connected to CPU bus
An SCPH-1001 motherboard.
An SCPH-9001 motherboard
System Control Coprocessor (Cop0)[citation needed]
  • This unit is part of the CPU. Has 16 32-bit control registers.
  • Modified from the original R3000A cop0 architecture, with the addition of a few registers and functions.
  • Controls memory management through virtual memory technique, system interrupts, exception handling, and breakpoints.


  • MiB main EDO DRAM[2]
  • Additional RAM memory is integrated with the GPU (including a 1 MiB frame buffer) and SPU (512 KiB), see below for details.
  • Cache RAM memory for CPU core and CD-ROM. See the relevant sections for details.
  • Flash RAM support through the use of memory cards, see below.
  • BIOS stored on 512 KiB ROM

Graphics processing unit (GPU)[edit]

32-bit Sony GPU

Sound processing unit (SPU)[edit]

16-Bit Sony SPU[2]
  • Supports ADPCM sources with up to 24 channels[2]
  • Sampling rate of up to 44.1 kHz[2]
  • 512 kB RAM[2]
  • PCM audio source
  • Digital effects include:
  • Pitch Modulation
  • Envelope
  • Looping
  • Digital Reverb
  • Load up to 512K of sampled waveforms
  • Supports MIDI Instruments

I/O system and connectivity[edit]

CD-ROM drive
  • (660MB maximum storage capacity, double speed CD-ROM drive)
  • 2×, with a maximum data throughput of 300 kB/s(Double speed), 150 KB/sec. (Normal)
  • XA Mode 2 compliant
  • Audio CD play
  • CD-DA (CD-Digital Audio)
  • 128 kB buffer
Two control pads via connectors
  • Expandable with multitap connector
Backup flash RAM support
  • Two removable cards
  • Each card has 128 KB flash memory
  • OS support for File Save, Retrieve and Remove
Video and audio connectivity
Serial and parallel ports

See also[edit]


  1. ^ a b c d e "Sony's PlayStation Debuts in Japan!". Electronic Gaming Monthly (65). Sendai Publishing. December 1994. p. 70. 
  2. ^ a b c d e f g h "Inside the PlayStation". Next Generation. Imagine Media (6): 51. June 1995. 
  3. ^ a b "Tech Specs: Sony PlayStation". Next Generation. Imagine Media (12): 40. December 1995. 
  4. ^ Karl Hodge. "Hall of Fame: Sony PlayStation, the games console that changed everything". 
  5. ^ "Sony PlayStation". GamePro (62). IDG. September 1994. p. 20. 
  6. ^
  7. ^ PlayStation GPU technical document
  8. ^ PlayStation technical document