Apple Gains Early Access to Intel's Z68 Chipset for New iMacs

095114 intel z68

As noted by tonymacx86 (via 9 to 5 Mac), iFixit's teardown of the new iMac released earlier this week reveals that the machine utilizes Intel's BD82Z68 platform controller. The inclusion is notable in part because the Z68 chipset is reportedly not set for public introduction until next week.

Apple use of the Z68 chipset marks yet another exclusive for the company, which has occasionally been granted early access to forthcoming chip components ahead of public unveilings and competitors' offerings.

The Z68 chipset is also notable because it supports SSD caching, a system that marries conventional hard drives to small solid-state drives (SSDs) to provide a seamless user experience with increased performance as the most frequently-accessed files are placed on the speedy SSD.

Apple of course offers SSD options in its iMacs, either as a replacement for or in addition to the traditional hard drive included as standard. The iMac's SSD, however, is a full 256 GB drive rather than the much smaller-capacity drives envisioned for SSD caching. And while Apple doesn't seem to be supporting true SSD caching in the new iMacs, the company achieves a similar but less seamless effect by installing the operating system and applications on the SSD while leaving the traditional hard drive for media on systems configured with both types of drives.

Intel is reportedly preparing to launch its own "Larsen Creek" line of SSDs with capacities around 20 GB and specifically designed to support seamless SSD caching when paired with a traditional hard drive and a compatible chipset such as the Z68. It is unclear if Apple will be looking to incorporate such systems in future hardware, but the company is clearly interested in pursing SSD technology for its performance benefits.

Related Roundup: iMac
Buyer's Guide: iMac (Buy Now)
Related Forum: iMac

Popular Stories

iCloud General Feature Redux

iPhone Users Who Pay for iCloud Storage Receive a New Perk

Thursday March 20, 2025 12:01 am PDT by
If you pay for iCloud storage on your iPhone, Apple has a new perk for you, at no additional cost. The new perk is the ability to create invitations in the Apple Invites app for the iPhone, which launched in the App Store last month. In the Apple Invites app, iCloud+ subscribers can create invitations for any occasion, such as birthday parties, graduations, baby showers, and more. Anyone ...
Generic iOS 19 Feature Mock

iOS 19 Coming in June With These New Features

Thursday March 20, 2025 2:04 pm PDT by
While the first iOS 19 beta is still more than two months away, there are already plenty of rumors about the upcoming software update. Below, we recap the key iOS 19 rumors so far. visionOS-Like Design In January, the YouTube channel Front Page Tech revealed a redesigned Camera app that is allegedly planned for iOS 19. According to Front Page Tech host Jon Prosser, the Camera app...
apple wallet drivers license feature iPhone 15 pro teal 1

Apple Says iPhone Driver's Licenses Coming to These 8 U.S. States, But Rollout Remains Slow

Wednesday March 19, 2025 6:55 am PDT by
In select U.S. states, residents can add their driver's license or state ID to the Wallet app on the iPhone and Apple Watch, providing a convenient and contactless way to display proof of identity or age at select airports and businesses, and in select apps. Unfortunately, this feature continues to roll out very slowly. It has been three and a half years since Apple first announced the...
Windows Vista

Apple Might Be Having Its Windows Vista Moment, Says Analyst

Thursday March 20, 2025 6:52 am PDT by
Is Apple experiencing a "Vista-like drift into systemically poor execution?" That was a question posed by well-known technology analyst Benedict Evans, in a recent blog post covering Apple's innovation and execution, or seemingly lack thereof as of late. He is referring to Microsoft's Windows Vista operating system, which was widely criticized when it launched in 2007 due to software bugs,...
iPhone 17 Pro Render Front Page Tech

Latest iPhone 17 Pro Dummies Highlight Apple's New Part-Glass Design

Thursday March 20, 2025 5:27 am PDT by
Seasoned leaker Sonny Dickson has shared more dummy models of Apple's upcoming iPhone 17 series, with the latest lot revealing a noticeable shift in Apple's iPhone Pro model design that goes beyond the much-talked-about new rear camera bar. Dickson points out that the iPhone 17 Pro dummy models feature an outlined area on the back, beginning just below the camera module and extending to the...
iOS 18

Top 5 New Features Coming in iOS 18.4

Friday March 21, 2025 3:26 pm PDT by
We're not getting new Siri Apple Intelligence features in iOS 18.4 as expected, but the upcoming update does have quite a few new additions that will be worth upgrading for. We've rounded up the five best features to look forward to, and if you're not running the beta, you can expect to get access to these in early April. Priority Notifications If you have an iPhone or iPad that supports...
airtag orange

Apple's Next Product is Likely an AirTag 2 With These New Features

Thursday March 20, 2025 2:30 pm PDT by
Following the introduction of the iPhone 16e, new iPads and Macs, and some new accessories over the past month, what will Apple's next product announcement be? Based on rumors, a second-generation AirTag item tracker is likely next up. Last year, Bloomberg's Mark Gurman reported that a new AirTag would be released around the middle of 2025. More recently, a leaker known as Kosutami claimed...
airpods pro 2 gradient

AirPods Pro 3 Launch Now Just Months Away: Here's What We Know

Tuesday March 18, 2025 9:13 am PDT by
Despite being released over two years ago, Apple's AirPods Pro 2 continue to dominate the wireless earbud market. However, with the AirPods Pro 3 expected to launch in 2025, anyone thinking of buying Apple's premium earbuds may be wondering if the next generation is worth holding out for. Apart from their audio and noise-canceling performance, which are generally regarded as excellent for...
iPhone 17 Air Fanned Feature

First iPhone 17 Air Case Has Camera Bar, Camera Control Button Cutouts

Wednesday March 19, 2025 5:29 am PDT by
Serial leaker Sonny Dickson today shared an image of what he claims is a first look at a third-party case for Apple's iPhone 17 Air. "If you didn’t know an Air was coming, you'd swear it was a Google Pixel case," he said. Case manufacturers often obtain design specifications of upcoming iPhone models before their release by collaborating with Apple through official partnerships or...

Top Rated Comments

alvindarkness Avatar
181 months ago
The Z68 does something far more important than just SSD Caching. It lets you use QuickSync. Basically letting you use the onboard intel HD GPU to accelerate tasks such as encoding while still relying on your dedicated GPU for normal graphics tasks.

Some Z68 motherboard manufacturers have decided to ignore this entirely, such as Gigabyte who dont supply power to the VAXG pin of the CPU - which means the Intel HD GPU is never powered.

I'd love to know what Apple have done. Does their implementation of the chipset/cpu allow OpenCL access to the HD2000/HD3000 on the iMacs?
Score: 6 Votes (Like | Disagree)
BTGeekboy Avatar
181 months ago
More than just SSD Caching...

The Z68 chipset has more functionality than just SSD caching. Check out the writeup from Tom's Hardware: http://www.tomshardware.com/reviews/z68-express-lucidlogix-virtu-ssd-caching,2888.html

A few things I learned from the article:
1. SSD Caching is not the best; it's far faster to use the SSD on its own. It does add a small speed bump when it's "primed" but, when I first read about it, it seemed like a lot of work for little gain, which I could already do better with existing chipsets.

2. The other big benefit, and I think this is even bigger than the SSD angle, is it allows you to access the excellent video transcoding capabilities that are included in the video chip built into the processor while making use of the add-in discrete graphics card to run the display. If they can combine that with Grand Central, that's a whole lot more performance out of the same chip than with a P67.
Score: 3 Votes (Like | Disagree)
Al Coholic Avatar
181 months ago
The big news here to me is Apple's continued quick access to components from intel that are barely out of the mold. Bodes well for future updates on their entire computer line.

Is it just me or has Apple been more aggressive with this in the last 12 months or so?
Score: 2 Votes (Like | Disagree)
Lesser Evets Avatar
181 months ago
I'm still waiting for an inexpensive and functioning PCI-e SSD for my tower. The tech is oddly behind for such things, on Mac. I'd love to have a 128gb SSD starter in a PCI-e slot... yeah, I'm slightly off topic.
Score: 2 Votes (Like | Disagree)
wacomme Avatar
181 months ago
It lets you use a cheap hdd to get speeds similar to an expensive large ssd.

Does this imply that with the arrival of TB supported drives, a cheap HD can be paired with a small SSD for speeds on par with a large SSD? Does TB access the Z68 chipset, assuming TB can be used as a boot drive?
Score: 2 Votes (Like | Disagree)
Hellhammer Avatar
181 months ago
That's the thing. We don't know how Apple has the display implemented in the iMac. They've implemented seamless display support allowing the use of both the IGP and a discrete GPU in the MacBook Pros so they can certainly implement something similar to allow the IGP to be active for QuickSync. As for Virtu, Apple would have to implement something similar themselves due to the different windowing/graphics system from Windows. It'll be interesting to see whether they've done so, perhaps in Lion. Certainly the performance of QuickSync over OpenCL for video encoding makes it worthwhile. Particularly, because all subsequent Intel processor generations look to keep and expand QuickSync support so adding support now will have long-term benefits and its something they will probably have to do eventually anyways.

And I've read the latest version of Virtu virtualizes the IGP rather than virtualizing the discrete GPU as before. Perhaps that also means that the display can be connected to the discrete GPU.

Hopefully Apple has since QS is definitely awesome. However, this could have been achieved with H67 as well since it supports the IGP as well so the main point of using Z68 still seems to be the SRT.
Score: 1 Votes (Like | Disagree)