IBM's new 2-nm chips have transistors smaller than a strand of DNA
In a shining example of the inexorable march of technology, IBM has unveiled new semiconductor chips with the smallest transistors ever made. The new 2-nanometer (nm) tech allows the company to cram a staggering 50 billion transistors onto a chip the size of a fingernail.
The current industry standard is chips with 7-nm transistors, with some high-end consumer devices, such as Apple’s M1 processors, beginning to make the move to 5 nm. And experimental chips have shrunk as small as 2.5 nm.
IBM’s new chips pip them all, with transistors now measuring just 2 nm wide – for reference, that's narrower than a strand of human DNA. That, of course, means the tiny transistors can be squeezed onto a chip far more densely than ever before, boosting the device’s processing power and energy efficiency in the process. The company claims that, when compared to current 7-nm chips, the new 2-nm chips can reach 45 percent higher performance or 75 percent lower energy use.
In practical terms, IBM says the tech could give a performance boost to everything from consumer electronics to AI object recognition to the reaction times of autonomous vehicles. Or, its energy savings could reduce the sizeable carbon footprint of data centers, or make for smartphone batteries that last four days on a single charge.
Transistors are often used to define technological progress – Moore’s law states that the number of transistors on a chip will double every two years or so. While it’s held more or less true since it was proposed in the 1960s, that rate has slowed down somewhat in recent years.
It’s been nearly four years since IBM revealed its 5-nm chips with 30 billion transistors – if Moore’s law was followed to a T, we’re two years late and 10 billion transistors short. In fact, IBM is only now doubling the transistors on its first 7-nm chips unveiled in 2015.
Still, we shouldn’t diminish the new development – 2 nm is quite the feat of engineering. As recently as 2019, engineers expressed concerns that technology wouldn’t allow much progress to be made smaller than 3 nm. Research by many companies over the past few years have put those concerns to rest.
It’s likely that we won’t see these 2-nm chips in consumer electronics until 2023 at the earliest, so for now go enjoy the benefits of the still-impressive 5-nm chips.
IBM discusses the new tech breakthrough in the video below.