In order for you to play SPORE on Windows with minimal graphics settings, your computer must meet the following requirements
Supported OS:
Microsoft Windows® XP with Service Pack 1 and Vista
Processor (CPU):
2.0 GHz Intel Pentium® 4 or equivalent
Memory (RAM):
512 MB RAM (768 MB RAM for Vista)
Graphics Card:
128 MB Video Card, with support for Pixel Shader 2.0
DirectX®:
The latest version of DirectX 9.0c or higher
Hard Drive:
At least 4 GB of hard drive space, with at least 1 GB additional space for creations
For computers using built-in graphics chipsets under Windows, 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