There was a revolution in phone/laptop power supplies when they switched to GaN.
Is anybody doing GaN power supplies for desktops? The premium market might be interesting.
Is anybody doing GaN power supplies for desktops? The premium market might be interesting.
In the data center, where power (and cooling) are the only significant OpEx, GaN point-of-load conversion is everywhere. Common as a rack distributed 48V to 12V bus or direct to processor Vdd (2% duty cycle is feasible with GaN thanks to fast on/off times). There was a while where GaN was used as part of the power factor correction for AC to DC in the server power supply, back when passing 400VAC or 800VAC bus around made sense. I think these days it's mostly back to DC buses, and AC-to-DC is all happening farther back, in part because of widespread solar deployments and trying to avoid DC->AC->DC double conversion losses when possible. So maybe GaN gets use on active secondary rectifier in the bus -> 48V now too.
Efficiency isn't a big selling point either. They are all good enough that you're not going to notice any difference on your power bill, and they don't get hot enough to cause issues.
The average gamer cares more about things like cable modularity, fan noise, and whether it has RGB.
Of course, given that ATX power supply vendors produce a standard-sized product, and they're limited to the ~1600W that Americans can draw from their 110v sockets, the GaN products are neither smaller nor higher power (though they might run a bit cooler or more efficiently).