Broadcom Corporation Voices FinFET Cost Concerns

At Broadcom's (NASDAQ: BRCM  ) most recent analyst day, the company talked at length about the new challenge the semiconductor industry is set to face on the economics of future manufacturing technologies. Mirroring what industry experts like Handel Jones have argued, Broadcom management said it expects that the cost per transistor (that's the building block of a modern chip) will rise in coming generations.

That, in a nutshell, means that as chips get smaller and power and performance improve, it becomes more expensive to add additional features such as bigger CPUs, beefier graphics, and dedicated accelerators. If your customer is willing to pay the added premium for products built on these new FinFET manufacturing technologies, then it's a win, but for cost-sensitive applications it may make more sense to stick to older technologies.

Don't take my word for it -- ask Broadcom's Rajiv Ramaswami
At the recent Cowen Technology, Media & Telecom Conference, Rajiv Ramaswami, executive vice president and general manager of Broadcom's infrastructure and networking group, noted that the semiconductor company would need to be very judicious about what designs it moves to the 16 FinFET manufacturing technology node, and what products it continues to iterate on 28 nanometer. When Ramaswami was questioned about whether the entire networking product lineup would eventually transition to 16 FinFET, his response was, "It's not clear yet."

The idea here is that the products that really benefit from more performance at lower power and the ones that offer the largest return on investment will move to the next-generation node. Broadcom expects that it can raise the average selling prices of these products since they will pack more features and performance. This makes sense -- the "better" product costs more. In a world where Broadcom's principal competitors all build their silicon at the same place, this isn't a problem.

This spells trouble for mobile processors
Broadcom sells big, bad networking chips for, in some cases, hundreds if not thousands of dollars. For the juiciest, highest-margin components, the move to FinFETs won't be a problem. The issue -- which affects the entire fabless semiconductor industry -- is when we start to talk about cheap chips. You know, like mobile applications processors.

If you look at this recent slide from ARM Holdings (NASDAQ: ARMH  ) , you can see a very clear trend: the low-end and midrange device markets -- both of which are cost sensitive -- are on the rise, while the growth in the high end is rather muted (and given Samsung's (NASDAQOTH: SSNLF  ) recent price cut on the Galaxy S5 relative to the Galaxy S4 at launch, this segment is not immune to average selling price erosion).

Source: ARM Holdings.

So you've got an industry that is increasingly focused on cost-sensitive products, and it seems that the "obvious" path to improved performance leads to meaningfully higher chip prices. There is most certainly a problem here, and it means that either one of two things will occur:

  • Margins for the fabless chip vendors will erode as the foundries capture most or all of the value of these chips.
  • Mobile chips will become more expensive over time as they get better.

In the first scenario, the foundries win and the fabless chip designers lose. In the second scenario, the foundries and the fabless chip vendors win, but the device vendors lose. A company such as Samsung, which builds its own mobile devices and is increasingly building its own chips, could avoid many of the pitfalls that a fabless player may encounter (also note that Samsung is trying to be a foundry, so it "wins" that way, too).

Foolish takeaway
As the industry advances to next-generation manufacturing technology, a lot of hard choices will have to be made about what manufacturing technology is used. It's no longer in the best economic interests of many players to blindly move everything to the latest and greatest manufacturing technology. This will have dramatic and sweeping implications to the industry, and -- particularly for price-sensitive markets like mobile applications processors -- the advancements through process nodes may slow significantly. 

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  • Report this Comment On May 30, 2014, at 3:17 PM, raghu78 wrote:


    Its known that transistor cost goes up at sub 20nm nodes. Two reasons

    1.) Multiple pattern immersion lithography (dual at 14nm and maybe quad at 10nm)

    2.) FINFET

    The alternative to FINFET is planar FD-SOI which brings excellent power efficiency and performance gains at much lower cost. With Samsung licensing 28 FD-SOI the path is laid for future nodes like 14-FDSOI to be a cost effective alternative to FINFET.

    btw you forget that the mobile market has grown at the expense of the PC market. tablets have cannibalized notebooks and ARM ecosystem has grown at Intel / AMD's expense. So the top mobile market players like Apple, Samsung and Qualcomm will continue to design at the leading edge nodes. The low cost market will choose to stay at cost effective nodes like 28nm bulk, 28-FDSOI. Future FD-SOI nodes like 14-FDSOI should also be attractive to the mobile market from a cost and performance perspective.

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Ashraf Eassa

Ashraf Eassa is a technology specialist with The Motley Fool. He writes mostly about technology stocks, but is especially interested in anything related to chips -- the semiconductor kind, that is. Follow him on Twitter:

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