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TSMC is about to become the world s most advanced chipmaker

Intel is pushed into second place by a Taiwanese rival

MORRIS CHANG is preparing for retirement. After 30 years in the role, the

founder of Taiwan Semiconductor Manufacturing Company (TSMC), the island s

largest firm, will step down as chairman in June. He will hand the reins over

to the current co-CEOs, C.C. Wei and Mark Liu, the former becoming sole CEO and

the latter chairman. Later that month the company will ship new semiconductors

manufactured with its latest technology. For the first time the world s most

powerful chips will be made by TSMC, not by Intel, its American rival.

Intel and TSMC are different sorts of company. Intel is an integrated device

manufacturer (IDM). It both designs and manufactures chips. TSMC is a foundry

, making chips for designers without factories, or fabs , which cost a

fortune. TSMC s latest fab will cost $20bn. The Taiwanese company pioneered

this model and is its dominant exponent. In 2017 it had 56% of the foundry

market, according to Trendforce.

Intel led the pack in squeezing more computing power onto chips. The company

turned Moore s law which states that computing power doubles every two years at

the same cost into a self-fulfilling prophecy. To do so they shrunk nodes ,

the width of the channel etched into silicon chips. The narrower the channel,

the more computing power can be squeezed in. Intel currently makes chips using

a ten-nanometre (billionth of a metre) node. TSMC s new ones are made with a

seven-nanometre node. TSMC s rise to technological leadership is reflected in

its valuation. In 2017, for the first time, its market capitalisation exceeded

Intel s.

How the company surpassed the king of chipmaking is hotly debated. It is hard

and expensive to shrink nodes. Smaller firms have stopped trying. One reason

may be that by 2017 TSMC was investing close to $3bn (8% of revenues) on

research and development. Mr Liu claims TSMC spends more on node technology

than Intel and Samsung, another IDM, combined.

The answer may also lie in the strength of the foundry model itself. Intel is

renowned for making computer processors and Samsung for smartphone chips. TSMC

serves both customers. It is ready to provide chips for new technologies as

they arise. In 2017 crypto-currency miners brought in revenues of $1bn. Their

rise was one we truly did not anticipate, says Mr Liu. As he puts it, the

firm s top five customers always account for roughly half of revenues, but the

names change. This variety helps TSMC to innovate.

Chipmaking also now requires a close partnership between manufacturers and

designers. Mr Liu describes this in painterly terms. A decade ago a customer

would design a simple pattern and the factory would make it for them. But

current designs have many shades and colours. That may benefit large

entrenched players. Whereas switching from one foundry to another was once

trivial, now companies work within the TSMC ecosystem for years before chips

are manufactured. Crypto-currency firms like Bitmain, a Chinese hardware

manufacturer, which has been collaborating with TSMC for three years, are among

hundreds of companies it works with. To switch fabs requires companies to

duplicate R&D invested in TSMC s technology.

High switching costs may not be a product of technological complexity alone.

GlobalFoundries, a smaller American competitor, argues that TSMC is

deliberately increasing these costs, using loyalty rebates, exclusivity clauses

and penalties. It has asked the EU to investigate. TSMC says the claims have no

merit.

For now, TSMC is in a sweet spot. It uses steady revenues from firms like

Apple, which are unwilling to switch to IDM firms like Samsung that are also

competitors, to fund R&D that other foundry firms cannot match. This sharpens

its technological edge, which in turn attracts new customers. Whether this can

continue is unclear. Moore s law is running out of steam. Beyond the next cycle

of shrinking nodes the future is less certain. As Mr Chang prepares to leave,

investors will hope Messrs Liu and Wei are chips off the old block.