Lubuntu

Lubuntu recommended requirements

Source

We have done many tests and we've found out that Lubuntu can be installed on a Pentium II or Celeron system with 128 MB of RAM, but such a system would not perform well enough for daily use.

• RAM: 256-384MB (512MB-1GB recommended)
• Hard drive: 2GB

Source

Recommended

• Display: 800x600
• RAM: 512MB
• Processor: 700MHz
• Hard drive: 5GB

Minimum

• Processor: Pentium II (PAE support REQUIRED)
• RAM: 128MB

PAE workaround

• Home page