Shoutbox

Here's What You Need to Use Windows XP Professional
• PC with 300 megahertz or higher processor clock speed recommended; 233 MHz minimum required (single or dual processor system);* Intel Pentium/Celeron family, or AMD K6/Athlon/Duron family, or compatible processor recommended

• 128 megabytes (MB) of RAM or higher recommended (64 MB minimum supported; may limit performance and some features)

• 1.5 gigabytes (GB) of available hard disk space*

• Super VGA (800 x 600) or higher-resolution video adapter and monitor

• CD-ROM or DVD drive

• Keyboard and Microsoft Mouse or compatible pointing device


As you can see 4GB is plenty Windows.