PlayStation technical specifications

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An SCPH-1000 motherboard
An SCPH-5001 motherboard
An SCPH-9001 motherboard
An SCPH-101 motherboard

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)

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.[4]
  • Operating performance: 80 MIPS[9]
  • 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.
  • It is directly connected to a CPU bus.

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.


  • MB main EDO DRAM[4]
  • Additional RAM is integrated with the GPU (including a 1 MB framebuffer) and SPU (512 KB), see below for details.
  • Cache RAM 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 KB ROM

Graphics processing unit (GPU)[edit]

32-bit Sony GPU (designed by Toshiba)[10]

Sound processing unit (SPU)[edit]

16-bit Sony SPU[4]

I/O system and connectivity[edit]

CD-ROM drive

  • 660 MB maximum storage capacity, double speed (CLV) CD-ROM drive
  • 2×, with a maximum data throughput of 300 KB/s (double speed), 150 KB/s (normal)[9]
  • 32 KB data buffer[12]
  • XA Mode 2 compliant
  • Audio CD play[9]
  • CD-DA (CD-Digital Audio)
  • Rated for 70,000 seek operations[13]

Two control pads via connectors[9]

  • Expandable with multitap connector[9]

Backup flash RAM support

  • Two removable cards[9]
  • Each card has 128 KB flash memory
  • OS support for File Save, Retrieve and Remove[9]
  • Some games (like "Music 2000") can use Memory Cards as main RAM, to store data for real time processing, bypassing the 2MB RAM limit.

Video and audio connectivity

Serial and parallel ports

Power input

  • 100 V AC (NTSC-J); 120 V AC (NTSC-U/C); or 220–240 V AC (PAL)
  • 7.5 V DC 2 A (PSone only)

See also[edit]


  1. ^ "FastForward Sony Taps LSI Logic for PlayStation Video Game CPU Chip".
  2. ^ a b c d e "Sony's PlayStation Debuts in Japan!". Electronic Gaming Monthly. No. 65. Sendai Publishing. December 1994. p. 70.
  3. ^ "FastForward Sony Taps LSI Logic for PlayStation Video Game CPU Chip". FastForward. Retrieved 29 January 2014.
  4. ^ a b c d e f g h "Inside the PlayStation". Next Generation. No. 6. Imagine Media. June 1995. p. 51.
  5. ^ a b "Tech Specs: Sony PlayStation". Next Generation. No. 12. Imagine Media. December 1995. p. 40.
  6. ^ Net Yaroze User Guide. Sony Computer Entertainment Inc. February 1997. p. 14.
  7. ^ Karl Hodge. "Hall of Fame: Sony PlayStation, the games console that changed everything".
  8. ^ "Sony PlayStation". GamePro. No. 72. IDG. September 1994. p. 20.
  9. ^ a b c d e f g h i j k l "Sony PlayStation". Next Generation. No. 24. Imagine Media. December 1996. p. 50.
  10. ^ "Is it Time to Rename the GPU? | IEEE Computer Society".
  11. ^ "NEXT Generation Issue #1 January 1995". January 1995.
  12. ^ "Nocash PSXSPX Playstation Specifications - CDROM - Response/Data Queueing".
  13. ^ "Making Crash Bandicoot – part 5". 6 February 2011.

External links[edit]