Processor and Display

• You need a 233 MHz or higher processor in your computer to run Internet Explorer 8. Your monitor should have a resolution of at least 800-by-600 pixels and be able to transmit 256 colors.
  
  

Operating Systems

• Internet Explorer 8 is compatible with Windows XP 32-bit with Service Pack 2 and Windows XP Professional x64 Edition. It also works with the 32-bit and 64-bit versions of Windows Vista with Service Pack 1 installed.
  
  

RAM

• You should have 64 MB of memory to run Internet Explorer 8 on Windows XP 32-bit. The browser requires 128 MB of RAM for installation on Windows XP Professional x64 Edition. You need 512 MB of memory to run it on either version of Windows Vista.
  
  

Hard Disk Space

• Make sure your computer has 70 MB of free space on its hard drive if you're installing Internet Explorer 8 with the 32-bit version of Windows Vista. The software requires 120 MB of free space for Windows Vista 64-bit. You need 150 MB of space if you run Windows XP 32-bit and 200 MB if your computer has Windows XP Professional x64 Edition.