Windows 8 Consumer Preview works great on the same hardware that powers Windows 7:

• Processor: 1 gigahertz (GHz) or faster
• RAM: 1 gigabyte (GB) (32-bit) or 2 GB (64-bit)
• Hard disk space: 16 GB (32-bit) or 20 GB (64-bit)
• Graphics card: Microsoft DirectX 9 graphics device or higher

Additional requirements to use certain features:

• To use touch, you need a tablet or a monitor that supports multitouch.
• To access the Windows Store and to download and run apps, you need an active Internet connection and a screen resolution of at least 1024 x 768.
• To snap apps, you need a screen resolution of at least 1366 x 768.

So, what’s new in Windows 8 consumer preview,

• Broad range of product changes and improvements. Since the Developer Preview in September, designed to preview the programming platform, Windows 8 has progressed across every dimension. From completing the user experience for touch, keyboard and mouse to refining the development platform, the Consumer Preview improves performance, quality and reliability across all subsystems. With the added features, it represents a more complete view of the capabilities of Windows 8.
• Windows Store with new apps. The Windows 8 Consumer Preview marks the beta opening of the Windows Store, which is filled with a variety of new Metro style apps from both third-party developers and Microsoft. During the Consumer Preview, these apps are available to try and experience at no cost to users. The Windows Store will offer personalized recommendations, and Windows 8 gives users the ability to take their apps and settings with them across multiple PCs, making it easy to discover and try new apps while offering developers the greatest opportunity of any platform.
• Connecting to the cloud across Windows-based PCs and Windows Phone. The Windows 8 Consumer Preview offers seamless integration with the content people care about across their devices. An optional additional sign-on with a Microsoft account provides access to a host of features, including the ability to roam all settings, use cloud storage, communicate with email, calendar and contacts, and connect to a broad range of services. Your connection to the cloud works across your Windows-based PCs and your Windows Phones.
• Internet Explorer 10 Platform Preview 5. The best way to experience the Web on Windows is with Internet Explorer 10. The browser has been re-imagined to create a new experience designed specifically for Windows 8 devices. It provides an edge-to-edge user interface that is all about less browser and more Web. Fast and fluid, Internet Explorer is hardware-accelerated to enable Web performance.
• Preview of new hardware capabilities. At the event, Microsoft also showcased Windows 8 running on a wide range of new x86- and ARM-based reference hardware. This hardware will be available to select developers for trial and testing as previously announced.

You can download Windows 8 directly from the links below and use the product key  DNJXJ-7XBW8-2378T-X22TX-BKG7J to register them.

• English

  64-bit (x64)                    Download (3.3 GB)
  32-bit (x86)                    Download (2.5 GB)

• Chinese (Simplified)

  64-bit (x64)                    Download (3.4 GB)

  32-bit (x86)                    Download (2.6 GB)

• French

  64-bit (x64)                    Download (3.3 GB)
  32-bit (x86)                    Download (2.5 GB)

• German

  64-bit (x64)                    Download (3.3 GB)

  32-bit (x86)                    Download (2.5 GB)

• Japanese

  64-bit (x64)                    Download (3.3 GB)

  32-bit (x86)                    Download (2.5 GB)

Note before you download: Windows 8 Consumer Preview is prerelease software that may be substantially modified before it’s commercially released. Microsoft makes no warranties, express or implied, with respect to the information provided here. Some product features and functionality may require additional hardware or software. If you decide to go back to your previous operating system, you’ll need to reinstall it from the recovery or installation media that came with your PC.