The system requirements have been posted for Spore Galactic Adventure in which I’ve update the System Requirements section for Spore.  Thanks for the tip, SimOperations!

Spore Galactic Adventures System Requirements

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SYSTEM REQUIREMENTS FOR PC:
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FOR WINDOWS XP

  • 2.0 GHz P4 processor or equivalent
  • 512 MB RAM
  • A 128 MB Video Card, with support for Pixel Shader 2.0
  • 2GB Free Hard Drive Space with additional 1GB for downloads

FOR WINDOWS VISTA

  • 2.0 GHz P4 processor or equivalent
  • 768 MB RAM
  • A 128 MB Video Card, with support for Pixel Shader 2.0
  • 2GB Free Hard Drive Space with additional 1GB for downloads

For computers using built-in graphics chipsets, the game requires at least:

  • Intel Integrated Chipset, 945GM or above.
  • 2.6 GHz Pentium D CPU, or 1.8 GHz Core 2 Duo, or equivalent.
  • 768 MB RAM

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.SUPPORTED VIDEO CARDS:
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ATI Radeon(TM) series

  • 9500, 9600, 9800
  • X300, X600, X700, X800, X850
  • X1300, X1600, X1800, X1900, X1950
  • 2400, 2600, 2900,
  • 3650, 3850

NVIDIA GeForce series

  • FX 5900, FX 5950
  • 6200, 6500, 6600, 6800,
  • 7200, 7300, 7600, 7800, 7900, 7950
  • 8400, 8500, 8600, 8800

Intel(R) Extreme Graphics

  • GMA 950, GMA X3000, GMA X3100

Laptop versions of these chipsets may work, but may run comparatively slowly. Standalone cards that are installed in vanilla PCI slots (not PCIe or PCIx or AGP), such as some GeForce FX variants, will perform poorly. Intel integrated chipsets featuring underclocked parts, such as the 945GU, GML, and GMS, will not perform adequately.

Integrated chipsets such as the ATI Xpress and the NVIDIA TurboCache variants will have low settings selected, but should run satisfactorily.

Please note that attempting to play the game using video hardware that isn’t listed above may result in reduced performance, graphical issues or cause the game to not run at all.

The NVIDIA GeForce FX series is unsupported under Vista.

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SYSTEM REQUIREMENTS FOR MAC:
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Spore requires at least the following:

  • Mac OS X 10.5.3 Leopard or higher
  • Intel Core Duo Processor
  • 1024 MB RAM
  • ATI X1600 or NVidia 7300 GT with 128 MB of Video RAM, or Intel Integrated GMA X3100
  • 2GB Free Hard Drive Space with additional 1GB for downloads

This game will not run on PowerPC (G3/G4/G5) based Mac systems (PowerMac).

For computers using built-in graphics chipsets, the game requires at least:

  • Intel Integrated Chipset GMA X3100
  • Dual 2.0GHz CPUs, or 1.7GHz Core 2 Duo, or equivalent

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.SUPPORTED VIDEO CARDS:
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ATI Radeon(TM) series

  • X1600, X1900, HD 2400, HD 2600

NVIDIA GeForce serieS

  • 7300, 7600, 8600, 8800

Intel(R) Extreme Graphics

  • GMA X3100

This game will not run on the GMA 950 class of integrated video cards