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We don't have any real numbers specifying the prevalence of GaN laptop chargers, but it's getting harder to find powerful machines that use silicon semiconductors instead of GaN. The USB-C chargers that accompany modern MacBook Pro laptops? They are filled with GaN semiconductors. You'll find this type of charging technology with higher-end models by Lenovo, Dell and just about everyone else. Some entry-level laptops, like the MacBook Air and Neo, still use silicon-based charging technology. However, they can be outfitted with third-party GaN chargers. To that end, accessory companies like Ank

One potential downside to using a GaN charger is that you just might not need it, so it could be a waste of money. The MacBook Neo, for instance, doesn't support fast charging. Attaching a GaN charger won't hurt the machine, but you'll only get a modest speed bump. Consumers do value speed, so GaN chargers tend to be more expensive than silicon chargers. This price difference is shrinking all the time, however, as the technology continues its journey toward mass adoption.