Download Chrome (v39) for Mac OS X: https://www.google.com/chrome/browser/?platform=mac
"Google has this evening begun rolling out native 64-bit builds of Chrome to Mac users on the stable channel.
Unlike its Windows kin, where a separate download is required, those running a compatible Mac will be automatically updated to the new builds in the background — no input required.
While most will be pleased by the switch in architecture, it comes at a cost to a minority of others.
On the plus side, progress is progress. Doubling the instruction set available should lead to better performance, security and general stability of Google Chrome on OS X here on in. Or, to put it in more familiar terms, you’ll spend less time staring at a bouncing Dock icon and more time enjoying buttery-smooth responsiveness.
32-bit NPAPI plugins will not work in Chrome 39 but since Java, Adobe Flash (included in Chrome) and a few others are already available in 64 bit versions, the hassle should be minimal."
Source: http://www.omgchrome.com/google-chrome-39-for-mac-is-now-64-bit-only/
Changelog: http://googlechromereleases.blogspot.co.uk/2014/11/stable-channel-update_18.html
"Google has this evening begun rolling out native 64-bit builds of Chrome to Mac users on the stable channel.
Unlike its Windows kin, where a separate download is required, those running a compatible Mac will be automatically updated to the new builds in the background — no input required.
While most will be pleased by the switch in architecture, it comes at a cost to a minority of others.
On the plus side, progress is progress. Doubling the instruction set available should lead to better performance, security and general stability of Google Chrome on OS X here on in. Or, to put it in more familiar terms, you’ll spend less time staring at a bouncing Dock icon and more time enjoying buttery-smooth responsiveness.
32-bit NPAPI plugins will not work in Chrome 39 but since Java, Adobe Flash (included in Chrome) and a few others are already available in 64 bit versions, the hassle should be minimal."
Source: http://www.omgchrome.com/google-chrome-39-for-mac-is-now-64-bit-only/
Changelog: http://googlechromereleases.blogspot.co.uk/2014/11/stable-channel-update_18.html