TSMC May Win Bulk of A9 Orders Due to Better Production Yield
News reports and rumors have gone back and forth multiple times over whether Samsung or the Taiwan Semiconductor Manufacturing Company (TSMC) will produce the A9 chips designed for use in next-generation iOS devices as the two companies compete for Apple's business.
In December, a report suggested Samsung had already begun production on the A9 chips, but a new analyst prediction shared by the Taipei Times suggests that TSMC, not Samsung, may be Apple's main A9 chip supplier due to its more favorable production yield.
"The two companies' technological capabilities are similar, so the key factor will be whose mass-production yield is better," MIC director Chris Hung (洪春暉) told reporters on the sidelines of the event. Hung added that the chances of TSMC remaining the main supplier are higher because of its better yields.
While one company will win the right to produce the bulk of Apple's next-generation chips, Apple may spread orders of the A9 processor across multiple suppliers in order to cut down on risk. The best yield results in the lowest price for Apple, so the company that manages to produce the most usable chips from a single wafer (a semiconductor material) will likely win the bulk of orders from Apple.
The continually shifting Samsung vs. TSMC rumors reflect the ongoing competition between the two chip manufacturing companies and demonstrate just how important Apple contracts are to suppliers. As we saw with GT Advanced and its failed sapphire deal with the Cupertino company, manufacturers will go to great lengths to secure lucrative partnerships with Apple.
In 2013, Apple signed a multi-year deal with TSMC to produce A-series processors for Apple devices as the company made an effort to move away from Samsung, but while TSMC produced the bulk of Apple's A8 and A8X chips for the iPhone 6 and the iPad Air 2, Apple has not been able to entirely cut ties with Samsung due to its chip production expertise and reliability.
As chip technology advances, it becomes more and more difficult for companies like Samsung, TSMC, Intel, and others to pack transistors onto an ever-decreasing surface area, which is why Apple has likely made moves to diversify its supply chain lineup in recent years. More suppliers gives the company a backup solution should one run into production difficulties that could result in potential delays.
Top Rated Comments
Don't worry, the savings won't be passed upon to you
and then pray to get their screen or hd. LOL
TSMC has had a BAD history of delivering.
Wasn't A8 suppose to be bulk TSMC? They failed and Samsung had to take over.
Apple has wanted to stop using Samsung to make its parts but the truth is...they make the BETTER parts
Samsung > TSMC over chips.
Samsung > LG over displays.
Different tape-outs will likely be needed for several reasons, even though Apple might be using 14nm (for example) processes from both TSMC and Samsung. "Why?", you might ask...
Samsung and TSMC are unlikely to have identical processes, even if they do use the same equipment in their fabs. Why different processes? Because they were developed differently - unless they licensed the process in its entirety from a 3rd party...
Manufacturing a complex semiconductor involves a lot of steps, some of which require the use of pretty nasty chemicals to etch away other chemicals, thus forming various patterns and structures on the silicon wafer on to which metals like aluminum or copper are deposited (to form signal pathways) or to which dopants are added to form the N type and P type junctions that make up transistors.
The complex computer aided design systems used by Apple and other designers need to know about the characteristics of the target manufacturing process in order to make sure that dopant areas are big enough to enable the transistors to work as intended, that signal pathways aren't too close together that they might short out in manufacturing, or become too narrow and so perhaps affect system timings in a variety of subtle ways. Remember there are upwards of 1-2 BILLION transistors on each of these devices... they pretty much ALL need to work as expected...
So different manufacturing processes equates to different design rules - if you are going to manufacture on 2 different processes, even if they are very similar, you are going to need to simulate your system against each set of design rules, and do your chip layout according to the different process/engineering/layout rules of each - and layout and simulation represent the majority of design time... So you don't go for 2 suppliers with these complex parts for the hell of it - it's a critical decision to make... requires a lot of engineering resources...
But if you're going to be selling 40-80 million devices a quarter, and it's core to your business reputation and model, then you'd be almost negligent to put all your 'eggs in one basket', so to speak... or at least, all in one fab, even if it's only with one supplier...
Creating the mask sets needed for TSMC and Samsung (because they won't be the same) for the 10-14nm process node is likely to cost $10s MILLION per set, and my $10s MILLION we're talking closer to $80M than $30M! If not more...
In summary, it's very unlikely that 2 fab processes developed by 2 different companies, even if they worked together closely, will be sufficiently similar for only 1 tape out to be needed AND still get the maximum density and performance out of the manufactured chips...
... and the cost of each tape out and mask set for each supplier at these process nodes/geometries is VERY HIGH!! So you'd think twice, and then twice again, before going down the road of multiple supplier...
UNLESS it's so critical to your business that you can't afford the risk of poor yields / capacity & supply constraints from your supply chain.
For the procurement/supply chain side of this topic, investigate the financial risk vs supply chain risk 'grid' put forward by Kraljic (it's the basis of supply chain management studies these days, I believe). Google 'kraljic purchasing model'.
Tape-outs & mask sets at the 10-14nm process nodes can cost 'in the region of $100M'...
So development by trial and error is out! Hence a LOT of simulation work... and that TAKES TIME and some serious computing power!
Also, just because we're talking Apple, TSMC & Samsung here - about the biggest buyer/suppliers of chips on the planet, doesn't mean that any of them will 'play nice and easy' when it comes to apportioning risk!
So far I only see experts claiming that its technically almost impossible to split advanced production runs because different companies have different requirements. You cant send the same tape-out to both companies because tape-outs for TSMC wouldnt be compatible with Samsungs equipment and vice-versa.
Instead of printing speculation from analysts could MacRumors instead try to speak to a subject expert to get real insight? You know, someone who actually knows a thing or two about chip design and production?
Their processes are also not compatible, so it's not simply flipping a switch to decide between the two.