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Intel launches first 14-nanometre processor for thin fanless PCs

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Dr. Jai Maharaj

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Sep 6, 2014, 3:27:03 PM9/6/14
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Intel launches first 14-nanometre processor for thin fanless PCs

By Leo Kelion
Technology desk editor
BBC News
Friday, September 05, 2014

The Core M is the world's first commercially available
processor with 14nm transistors

Related Stories

o Intel delays production of new chip
o Intel chip microsleeps to save power
o Intel launches Ivy Bridge chips

Intel has launched a generation of processors with the
smallest transistors ever featured in a commercial
product.

The Core M chip is the first in the family of Intel's
next-generation Broadwell processors.

Intel had initially aimed to start delivering them to
computer makers last year.

However, problems manufacturing the 14-nanometre
transistors meant that the first chips were not sent
until July.

The tech offers improved computing power and better
battery life, according to Intel.

The firm has managed to make the physical size of the
Core M 50% smaller and 30% thinner than that of the
equivalent last-generation Haswell chip, which featured
22-nanometre (meaning billionths of a metre) transistors.

The firm said manufacturers would now be able to produce
"razor-thin" fanless tablets - less than 9mm (0.35in)
thick - without having to opt for a less powerful option,
such as a rival ARM-based processor.

HP is one of the first PC makers to take advantage of the
new computer chip

To coincide with Intel's launch at Berlin's IFA tech
conference, several firms - including Acer, Asus, Dell,
HP and Lenovo - unveiled laptop-tablet hybrids featuring
the new processor.

The Core M is intended to be the most basic version of
Broadwell. More powerful releases destined for desktop
PCs and high-end laptops should become available early
next year.

Experts said some manufacturers have had to delay product
launches as a consequence.

But they added that Intel should not have lost business,
because it still had a significant lead over its PC chip
rival AMD when it came to CPU (central processing unit)
development.

"Intel has a year-and-a-half to a two-year advantage over
AMD in processing technology based on announced
products," said Sergis Mushell, research director at the
tech consultancy Gartner.

"Fourteen nanometre is not an easy thing to achieve -
it's an industry first - so it's not the case that Intel
is falling behind the rest of the industry.

"But where the delay is meaningful is the added time to
deliver two-in-one fanless devices, which would have been
very competitive with the [ARM-based] tablets that
impacted sales of PCs."

Broadwell has taken longer to deliver than expected

Intel said it had been a "business decision" to produce
the Core M chips first.

Tick time

According to the company, users should experience 50%
faster computing performance and 40% faster graphics
performance with Core M than a comparable last-generation
chip.

However, applications may not see a matching speed
increase because of the limitations of other components.

Intel said its tests indicated that a system that used to
manage six hours and 20 minutes of video playback before
running out of battery now lasted for more than eight
hours.

Broadwell represents the "tick" in Intel's "tick-tock"
development model, meaning that the major change is the
shrinking of the processor's transistors rather than an
overhaul of its architecture, as was the case with
Haswell.

Transistors are a kind of switch that turns on and off as
quickly as possible to let a computer carry out its
calculations.

According to Moore's Law - an observation by one of
Intel's co-founders - the number of transistors that can
be placed on a chip for the same cost doubles roughly
every two years.

The company acknowledged that it was becoming more
difficult to hit the target.

"Moore's Law is incredibly challenging," said Kirk
Skaugen, Intel's general manager of personal computing.

"Putting billions of transistors on nanometres of silicon
is not something anyone has ever done before.

"It has got harder every generation over the last decade
or few... and I expect it to continue to be very
difficult, but we are confident as we look forward."

He added that one of Intel's key advantages was that it
was the first and only company to shift over to "3D" or
tri-gate technology, which had helped it shrink the
transistors' size.

What are 3D transistors?

Traditional planar chip design (left) and Ivy Bridge's
tri-gate technology (right)

Traditionally transistors have used "flat" planar gates
designed to switch on and off as quickly as possible,
letting the maximum amount of current flow when they are
switched on, and minimum when they are switched off.

The problem is that the smaller the planar gates become,
the more energy leakage occurs unless their switching
speed is compromised.

Intel's solution has been to make the transistors "3D" -
also known as tri-gate - replacing the "2D" gates with
super-thin fins that rise up from the silicon base. Three
gates are wrapped around each fin - two on each side and
the other across the top.

The move was introduced in its Ivy Bridge family of chips
in 2012, for which the distance between the nodes in the
transistor was 22nm.

For reference, a human hair is about 60,000nm in
diameter.

For Broadwell that gap has been shrunk to 14nm, which has
been achieved in part by making the fins taller and
thinner, and spacing them closer together. Since the
revamped fins are more effective, fewer are needed than
before, which also helps save on space.

The tri-gate fins on Broadwell transistors are taller and
closer together than before

The next next-generation

One of the consequences of Broadwell's delay is that its
successor may be fast on its heels.

Intel's chief executive Brian Krzanich confirmed in July
that the first Skylake chips were still set to go on sale
next year, offering further speed gains.

But one expert said that consumers should not put off a
purchase.

"While I don't doubt that Skylake will be an improvement,
I don't think it will be as big as an improvement as what
we're seeing right now going from Haswell to Broadwell,"
said Ryan Smith, editor-in-chief of the hardware news
site AnandTech.

"Furthermore, Intel is being really vague about when
Skylake will arrive.

"There's a pretty good chance it will be towards the
middle to the end of 2015, in which case you're not
waiting just a few months but almost a year."

More on This Story

Related Stories

o Intel delays production of new chip 15 October 2013, Technology
o Intel chip microsleeps to save power 04 June 2013, Technology
o Intel launches Ivy Bridge chips 22 April 2012, Technology

http://www.bbc.com/news/technology-29066210

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BBC News

http://www.bbc.com

Jai Maharaj, Jyotishi
Om Shanti

http://groups.google.com/group/alt.fan.jai-maharaj

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