Intel aims next-gen 14nm 'Broadwell' technology at fanless tablets, Ultrabooks

Intel aims next-gen 14nm 'Broadwell' technology at fanless tablets, Ultrabooks

Intel's 14nm 'Broadwell' process technology will power the Core M for laptops and tablets and the next-generation Core desktop chips.

Intel formally unveiled its 14nm manufacturing technology, a capability the company believes will usher in a new generation of fanless Ultrabooks and tablets.

Intel formally unveiled its 14nm manufacturing technology, a capability the company believes will usher in a new generation of fanless Ultrabooks and tablets.

Intel has formally unveiled its 14nm manufacturing technology, a capability the company believes will usher in a new generation of fanless Ultrabooks and tablets.

Intel's 14nm technology will generally be known as the "Broadwell" generation, the manufacturing technology that will underscore a new generation of products from tablets up through processors powering servers. Within the notebook and tablet market, those products will be known as the Core M.

Intel is expected to more formally launch the Core M products and the Broadwell generation at the IFA show in September. An Intel spokeswoman said the Core M will ship before the end of 2014, with systems on shelves by the end of 2014. Broadwell chips for the desktop, using the Core brand name, will follow shortly thereafter, she said.

Since the Broadwell generation represents manufacturing improvements and not a new chip design, the selling point is significantly reduced power. (Shrinking the process technology allows Intel the option to either increase performance, while holding power consumption constant, or cut power, while holding performance constant. In the notebook space, Intel has chosen the latter.)

What this means, then, is that notebooks and tablets using the new Broadwell chips will offer the same performance as the current "Haswell" chips (which power today's Core chips), with the same battery life--but much lower power. In the real world, that will mean a "radically different" form factor: tablets 8 millimeters thick or even thinner, said Stephan Jourdan, the chief architect of Broadwell, an Intel fellow, and the director of its system-on-a-chip architecture. Intel has already shown off one of those prototype tablets, known as Llama Mountain.

Jourdan said tablets running Broadwell chips like the Core M will consume 3 to 5 watts. The low power and thin design could mean eliminating one computing annoyance: the hissing fan.

"The one takeaway I want you to have is that this will deliver the experience of the Intel Core in fanless systems," Rani Borkar, vice president of the platform engineering group.

That doesn't mean all Broadwell systems will eliminate fans, an Intel spokeswoman said. But OEMs will have the opportunity to design ultrathin tablets systems that could eliminate fans, a real first for the Core processor platform. "Putting the processor behind the glass is a lot more difficult than putting it in the base of an Ultrabook or notebook," Karen Regis, a mobile marketing manager at Intel, said.

Intel executives say it did achieve a modest 5 percent improvement over Haswell in the instructions per clock that Broadwell will achieve. In graphics, however, Broadwell will significantly improve, with 20 percent more compute power and 50 percent higher sampling than Haswell, plus twice the performance of the video quality engine. Broadwell chips like the Core M will support Direct X 11.2, and chips will support 4K and UHD resolutions.

The upshot, according to Bob O'Donnell, principal at TECHnalysis Research, is consumers have the chance to make a huge leap from a laptop they bought four years ago to the Broadwell crop. In a survey of 2,500 purchasers in the United States, the U.K., China, and Brazil, consumers were interested first in a large smartphone and then a traditional notebook.

"There are major changes there," O'Donnell said. "That's why I don't think Microsoft made the right choice in calling the Surface a tablet. It's the evolution of the PC. That's the challenge, that's the next big thing: incredibly thin designs."

Broadwell optimised for low power

On Broadwell, Intel's design team started with the goal of a Core processor operating within fanless tablets. "That was the starting point, that was the vision that the team started with," Borkar said.

To reach that goal, Broadwell mixes in a number of improvements: from 14nm process optimisations and improvements in the chip packaging to more aggressive power management or quickly turning of parts of the chip that weren't being used. Finally, Intel attempted to reduce the power of those chips that are running at a given time as aggressively as possible.

In general, Intel's 14nm process cuts the power by 25 percent, compared with the 22nm technology used with Haswell, Intel executives said. According to Mark Bohr, a senior fellow in Intel's manufacturing group, the 14nm process achieved a more than 2X improvement in performance per watt versus the 22nm technology used by Haswell. Intel also added a second generation Fully Integrated Voltage Regulator (FIVR), delivering better efficiencies at lower voltages.

Intel shrunk the processor package itself by more than 50 percent on the X and Y axis, and an additional 30 percent in height, Jourdan said, to 3 0 mm x 16.5 mm x 1.04 mm thick.

Intel's "turbo boost" technology, which overclocks the chip in short bursts to quickly accomplish tasks and go into a low power mode, also received improvements. While Haswell's PL2 mode allows the system to run at a high-power draw for a few seconds, a new "PL3" mode actually spikes performance even higher--but just for a few milliseconds.  Jourdan also said Intel did some major work rearchitecting I/O functions, such as memory and graphics, to help reduce power across the Core M processors themselves.

Broadwell systems will also do a better job in communicating information back and forth between system components, the processor, graphics, system fan, WiFi chip, memory, battery charger, and more. The idea, Jourdan said, was to better manage across the system itself, maximizing the total battery life.

Intel will manufacture Broadwell chips at two 14nm fabs in Oregon and Arizona, with a third in Ireland coming on line in 2015.

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