chrome.jpgBack in August, Google launched a beta build of 64-bit Chrome for Mac, following the public release of 64-bit Chrome for Windows. After several months of testing, Google today launched Chrome 39, its first stable-release 64-bit browser for OS X.

As Google said when it launched a beta version of 64-bit Chrome for Mac, 64-bit support will bring several speed and security improvements to the browser, in addition to decreasing the amount of memory that it uses.

Chrome 64-bit Chrome has become faster as a result of having access to a superior instruction set, more registers, and a more efficient function calling convention. Improved opportunities for ASLR enhance this version's security. Another major benefit of this change comes from the fact that most programs on a modern Mac are already 64-bit apps.

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. 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.

With the release of Chrome 39, the 32-bit version of Chrome will be retired, left on Chrome 38, which means that some users of older Macs will not be able to use the new Chrome 39.

Along with 64-bit support, the new Chrome update includes new apps and extension APIs, plus improvements to stability and performance. There are also 42 security fixes for various vulnerabilities, which resulted in $41,500 in bounties that Google paid out to the individuals that reported the issues.

Chrome 39 can be downloaded from Google's Chrome website or installed using the Chrome browser's built-in update functionality.

Top Rated Comments

gmanist1000 Avatar
144 months ago
Can't be worse than safari. About 25% of the time safari takes 10-20 seconds to open a page.

You may need to look into your ISP.
Score: 14 Votes (Like | Disagree)
Tmelon Avatar
144 months ago
Welcome to 2009, Chrome!
Score: 11 Votes (Like | Disagree)
2457282 Avatar
144 months ago
I bought a iMac. I bought an iPad. I bought an iPhone. I don't see any reason to ruin that with Chrome. Now with handoff integration there really isn't any reason to allow Google and the NSA onto my Apple hardware.
Score: 9 Votes (Like | Disagree)
PoppaKap Avatar
144 months ago
Can't be worse than safari. About 25% of the time safari takes 10-20 seconds to open a page.
Score: 9 Votes (Like | Disagree)
johnnnw Avatar
144 months ago
One of the reasons I stopped using Chrome altogether and went to Safari primarily. Too little, too late. 32bit was a memory pig.
Safari is bad though. Looks good, but still one of the slower browsers. And huge lack of extensions for people who like that. And Adblock is bad on Safari because of API restrictions (can't block a lot of pre-roll type ads).
Score: 8 Votes (Like | Disagree)
69Mustang Avatar
144 months ago
Safari is great and all, but does no good when people use a mac AND Windows PC. If they had a valid Safari for windows that was continually updated, that would be a different story. At least with chrome, you can sync bookmarks/profiles over different devices AND platforms

This is my #1 reason for using Chrome. No matter which device I chose for browsing (OSX, Android, or Windows), my profile carries over. Plus I genuinely like Chrome.
Score: 7 Votes (Like | Disagree)

Popular Stories

streaming black friday 2025

Black Friday Streaming Deals Include Big Savings on Disney+, Hulu, Apple TV, and More

Monday November 24, 2025 8:03 am PST by
We've been focusing on deals on physical products over the past few weeks, but Black Friday is also a great time of year to purchase a streaming membership. Some of the biggest services have great discounts for new and select returning members this week, including Disney+, Hulu, Paramount+, Peacock, and more. Note: MacRumors is an affiliate partner with some of these vendors. When you click a...
iOS 26 on Three iPhones

iOS 27 Will Reportedly Have Two Key Upgrades

Sunday November 23, 2025 8:48 am PST by
iOS 27 will reportedly have two major elements: quality improvements and new AI features. In his Power On newsletter today, Bloomberg's Mark Gurman said that iOS 27 will be similar to Mac OS X Snow Leopard, in the sense that Apple is focused on improving "quality and underlying performance" over adding new features. Gurman said there is one exception to this rule, though, as he expects...
General Black Friday Deals 25 Red

Apple Black Friday Deals Available Now on AirPods, iPads, Accessories, and More

Friday November 21, 2025 8:48 am PST by
We're only a few days away from Black Friday, which will take place on Friday, November 28 in 2025. As always, this will be the best time of the year to shop for great deals, including popular Apple products like AirPods, iPad, Apple Watch, and more. In this article, the majority of the discounts will be found on Amazon. Note: MacRumors is an affiliate partner with some of these vendors. When...
iOS 26

iOS 26.2 Adds These New Features to Your iPhone

Thursday November 20, 2025 10:50 am PST by
iOS 26.2 is currently in beta testing. The upcoming update includes a handful of new features and changes on the iPhone, including a new Liquid Glass slider for the Lock Screen's clock, offline lyrics for Apple Music, and more. In a recent press release, Apple confirmed that iOS 26.2 will be released to all users in December, but it did not provide a specific release date. Keep reading...
maxresdefault

The MacRumors Show: iPhone 18 Pro Looks Like a Huge Upgrade

Friday November 21, 2025 9:10 am PST by
On this week's episode of The MacRumors Show, we talk through all of the new features and improvements expected to come to next year's iPhone 18 Pro and iPhone 18 Pro Max models. Subscribe to The MacRumors Show YouTube channel for more videos Apple's next-generation iPhones are less than ten months away and we already have a good idea about what to expect based on corroborated leaks, rumors,...
Apple Foldable Thumb

Foldable iPhone to Debut These Three Breakthrough Features

Tuesday November 25, 2025 7:09 am PST by
Apple's first foldable iPhone is expected to launch alongside the iPhone 18 Pro models in fall 2026, and it's shaping up to include three standout features that could set it apart from the competition. The book-style foldable will reportedly feature an industry-first 24-megapixel under-display camera built into the inner display, according to a recent JP Morgan equity research report. That...
apple news banner

Apple News Loses CNN

Monday November 24, 2025 7:56 am PST by
American multinational news company CNN has abruptly pulled its content from Apple News, Semafor reports. CNN quietly removed its stories from Apple News over the weekend and there is no longer a feed from the network to subscribe to in the app. This effectively ends its distribution agreement with Apple while the two sides negotiate new terms. Discussions are apparently ongoing and CNN's...
amazon black friday

Amazon Kicks Off Black Friday Sale With Major Discounts on Apple Accessories, TVs, and More

Sunday November 23, 2025 7:12 am PST by
Black Friday deals have begun, and Amazon is one of the best places you can find steep discounts on numerous products this week. We've already collected all of the best Apple-related deals you'll find at Amazon (and other retailers) in our Apple Black Friday Deals post, so below you'll find other discounts on devices like Anker accessories, Beats headphones, video games, TVs, and more. Note:...
Apple Shopping Event 2025

Apple Announces 2025 Black Friday Event, Here's What You Can Get

Thursday November 20, 2025 6:28 am PST by
Apple's annual four-day Black Friday through Cyber Monday shopping event is returning on Friday, November 28 through Monday, December 1 in many countries, including the United States, Canada, Australia, New Zealand, France, Germany, Italy, Spain, the United Kingdom, Belgium, the Netherlands, Sweden, Thailand, and others. During the shopping event, customers can get an Apple gift card with...