FAQ: Windows 7 hardware requirements and compatibility

The minimum requirements for Windows 7 are modest by today's standards:

• 1 GHz or faster 32-bit (x86) or 64-bit (x64) processor
• 1 GB RAM (32-bit) or 2 GB RAM (64-bit)
• 16 GB available disk space (32-bit) or 20 GB (64-bit) -- just for the OS, not applications or data files
• DirectX 9 graphics processor with Windows Display Driver Model (WDDM) 1.0 or higher
• Internet access

As with any Windows-based OS, a faster processor, more RAM and ample free hard drive space generally mean a better computing experience. RAM is especially important. For example, upgrading the RAM from 1 GB to 2 GB on a 32-bit system should give the end user a dramatic increase in responsiveness and apparent speed.

One of the essential differences between 32-bit and 64-bit systems is that a 64-bit computer lets you use more than 4 GB of RAM, which can be a huge boost for users who run graphics or CAD software, or multiple applications or multiple virtual machines (VMs) at the same time.

For best results, match a computer's processor to the OS. A 32-bit computer should run a 32-bit OS, and it can't run a 64-bit OS. However, you can run either OS on a 64-bit computer. If your 64-bit computer has 4 GB or more of RAM, and doesn't run older, specialized 32-bit software or drivers, go with the 64-bit OS to get the best performance.

To check a system for 64-bit capability, open the Start menu, right-click Computer and select Properties. The System section states whether you have a 32-bit or 64-bit operating system.

Note: You cannot easily switch between Windows 7 32-bit (x86) and 64-bit (x64). If you're using one and desire the other, your only option is to perform a clean, or custom, install.

As long as a netbook meets the minimum hardware requirements, it can run Windows 7. Because most netbooks lack optical drives, you can run the Windows 7 setup from a USB flash drive or external optical drive.