Google Chrome for Mac 64-bit (About screenshot)

After releasing 64-bit Chrome for Windows and a beta version of Chrome for Mac with 64-bit support back in August, Google today announced that the app is out of beta and available to everyone.

Public release of the 64-bit Chrome for Mac edition marks the end of the road for 32-bit NPAPI (Netscape Plug-in APIs) plugins as the Internet company now requires developers to provide their extensions with 64-bit support.

Most users shouldn’t be affected, however, because the vast majority of plugins and extensions are readily available in both 32-bit and 64-bit form. Chrome 39.0.2171.65 (Google, we need to talk about version numbers!) also includes more than three dozen under the hood changes for stability and performance and comes with a set of new APIs allowing extension developers to take advantage of new features.

Although 64 bits won’t make everything run twice as fast, Google says the 64-bit edition of Chrome for Mac allows “us to make a number of speed and security improvements”. You should experience a bit faster performance thanks to Chrome having access to “a superior instruction set, more registers and a more efficient function calling convention.”

The app should help reduce overall system memory use because OS X won’t load 32-bit copies of all the system libraries like when you open the 32-bit Chrome edition.

“In cases where Chrome was the last remaining 32-bit app, there were launch-time and memory-footprint penalties as 32-bit copies of all of the system libraries needed to be loaded to support Chrome,” wrote the company. “Now that Chrome’s a 64-bit app too, we expect you’ll find that it launches more quickly and that overall system memory use decreases.”

This update includes a total of 42 security fixes, including ones for address bar spoofing. A partial list of changes is available in the Chrome 39 changelog here.

To update your copy of Chrome of Mac to the latest version available, use the About Chrome option in the menu. Chrome features a silent update mechanism that always keeps your copy of Chrome up to date so you may already be on the latest release.

You can also manually download the Chrome installer straight from Google. To switch between developer, beta and stable Chrome channels, follow Google’s instructions here.


  • Felipe

    I have a question but isnt about this topic. Is Apple still signing iOS 8.1? My iphone 5s is in 7.0.4 .. I can update to the 8.1? Or i can restore again to the 7.0.4? If i can, the apps would be update too? Thankssss

    • abhi0n0nakul

      Yes .
      You better update to 8.1 fast
      Apple will be closing window soon

      • Felipe

        Thank you bro. How can i do that? In Itunes have the version 8.1.1.

      • abhi0n0nakul

        Well you have to download the ios file elsewhere like from downloads section of this site.
        And then do restore

      • Felipe

        All right dude! Only download the version 8.1 and restore with the “shift” (on windows), right? Ill do the backup now and restore now too! Thank you so much! Do you know if my apps will be updated too when i recovery the backup?

      • abhi0n0nakul


  • Arsanny Lintang

    it was 32-bit this whole time?? WHAAAAAT

    • yup.

    • Why do you think it’s so bad? I use Chrome on every other platform but on OS X Safari is so much better especially in the battery department…

  • Chris

    I was testing it for most of the day and it’s much better especially when it comes to CPU usage and memory consumption.

  • GarrettD

    I used 64-bit Chrome on my laptop for a few weeks but I kept noticing a really long delay when opening new tabs or entering search queries into the address bar. don’t know why it lagged so much but I had to come back to 32-bit :S

  • It still speeds up my Mac’s fan while watching 1080p videos on YouTube while Safari doesn’t.