ARM: Heretic in the church of Intel, Moore's Law
Rival flouts rule to seize the day with cheaper chips for a growing netbook market
Computerworld - For 30 years, the PC industry has treated Moore's Law with religious reverence. Its immutable commandment -- "Thou shalt double the number of transistors on circuits every 18 months" -- created an enviable business model with consumers spurred to buy new, more-powerful PCs every few years.
The gospel according to Moore also drove Intel Corp.'s engineers to perform miracles of miniaturization over the years. Its latest achievement, the 2 billion-transistor, quad-core Itanium Tukwila CPU, is due for release in the second half of this year.
Coincidentally, that's when the greatest blasphemy to Moore's Law -- and the biggest threat to Intel's dominance -- is expected to make its entrance into the PC market.
U.K.-based ARM Holdings PLC had modest financial success in 2007, with $518 million revenue and a $2.1 billion market cap. However, the chip maker is wildly successful in the mobile device market. ARM's chips are used in devices such as Apple's iPhone, RIM's BlackBerry and virtually every other cell phone, as well Lego's Mindstorm robots and Japanese toilet seats that talk and squirt.
Its partners -- ARM only designs the chips, preferring to license them to partners to make -- have shipped more than 10 billion processors in the past 23 years. By comparison, Intel has shipped somewhere between 1 billion and 2 billion CPUs.
ARM aims to extend its mobile device success into the red-hot netbook space.
Ian Drew, senior vice president at ARM, told Computerworld recently that he expects to see "six to 10 ARM-based netbooks this year, starting in Q3." The devices will run Linux or a Linux derivative, such as the Google-backed Android smartphone operating system, boast eight to 12 hours of battery life and cost about $200, he said.
Drew's price estimates for upcoming ARM-based netbooks represent savings of up to half off compared with today's cheapest Intel Atom-based netbooks, which range from $300 to $400.
Bob Castellano, an analyst at The Information Network, predicted that ARM netbooks will grab 55% of the market by 2012.
Are laws meant to be broken?
By Moore's Law, ARM would have no chance of success by bringing to bear chip technology that is underpowered in both senses of the word.
Its ARM7TDMI chip was first released in the mid-1990s. The 2006 version used in Apple Inc.'s iPod music player and Nintendo Co.'s DS game device still has a 100,000 transistors -- fewer than a 12 MHz Intel 286 processor from 1982 (according to this download PDF).
Some of ARM's most popular CPUs have as few as 15,000 to 20,000 transistors, said Drew. That number represents less than half that of Intel's 8088 chip in 1979, which powered the original IBM PC.
While not impressive on processing power, such modest chips also draw less than quarter of a watt of electricity -- a huge benefit for companies looking to design ever smaller devices with long battery lives. Before green computing was hip, ARM was walking the walk out of necessity to meet the requirements of its device-building customers.
ARM may have some chips today that eclipse the 1-GHz mark, but "it's not just about raw megahertz; it's about how effectively you use them," Drew said, adding that's why "we prefer to use different metrics, like megahertz per milliwatt of electricity."
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