Google has been working on the 64-bit support for Windows 7 and Windows 8 since June. Chrome 37 for Windows, Mac, and Linux also released a long-awaited stable version of its Chrome browser for Windows systems. Google claims the new version offers faster performance as well as security and stability enhancements in comparison to 32-bit version. But, Chrome is still an opt-in process. So, if you want to take advantage of it, you can hit the new “Windows 64-Bit” download link over at google.com/chrome.
Source: https://thehackernews.com/2014/08/google-chrome-64-bit-browser-finally_27.html