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TSMC to Adopt GAA Technology with 2nm Process, Samsung with 3nm

TSMC’s 2nm process which is said to utilize the GAA technology is said to be going through development at a faster than expected rate. While Samsung is already planning to switch to GAA technology with its 3nm node in 2021 (mass production), TSMC has stated that its 3nm node will continue to use the FinFet process while the 2nm node based on the GAA technology will enter mass production in the second half of 2023.

At present though, TSMC is well ahead of its Korean rival, with the majority of chipmakers looking to adopt its 5nm process in 2021, following Apple. As per sources, yields for the 5nm node are even better than the existing 7nm process. The 3nm process, on the other hand, will be mass-produced in the second half of 2022. TSMC seems to believe that its 5nm and 3nm nodes will be more than enough to combat Samsung’s 3nm GAA process.

On advantage TSMC has is that it’ll continue to be Apple’s primary foundry partner right till the 2nm GAA node which is being jointly developed with ample support from the smartphone maker.

artwork showing MOSFET in off mode
artwork showing MOSFET in on mode
A FinFet transistor: Here the gate allows the current to flow from source to drain when turned on using the the Field Effect Transistor (FET) by applying a charge

In case you are wondering what the big deal with GAA is, it’s more about current leakage as you shrink transistors. Usually, current only flows between the source and drain of a transistor when you turn it on. However, if you go below certain limits in terms of gate length, the current beings to flow between the source and drain even when the transistor is off.

14nm and 7nm are NOT what you think it is – Visiting Tescan Part 3/3 – YouTube

As you can see in the above image, the Gate in the middle covers the source-drain from three sides. It’s a 3D structure as shown in the earlier image. This is a side-view. With GAA, the gate (in purple below) covers all the source-drain channel from all the four sides, further reducing leakage.

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Data source

Areej

Computer Engineering dropout (3 years), writer, journalist, and amateur poet. I started Techquila while in college to address my hardware passion. Although largely successful, it suffered from many internal weaknesses. Left and now working on Hardware Times, a site purely dedicated to. Processor architectures and in-depth benchmarks. That's what we do here at Hardware Times!

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