Best fanless PC with high end CPU/GPU?

(Not an answer, but just a side note)

In case anyone's primarily concerned about fan noise or heat while gaming, GeForce Now is a really amazing alternative to having to buy or maintain your own PC. It's a RTX 4080 in the cloud for $10/mo (currently on sale): https://www.nvidia.com/en-us/geforce-now/

The tech has gotten dramatically better since the Stadia days (and Nvidia has the first-party advantage here), and you can play many AAA games in 4k/120 fps with minimal latency.

When I first tried it out, I thought it would be a neat addition for traveling or whatever. But it works so well, and is so much quieter & cooler compared to a local GPU, that I eventually sold my desktop altogether and just use this now.

Not affiliated with them. Just an incredibly satisfied customer (who hopes Nvidia won't abandon the gaming segment for their AI money printing).

There's a fairly straightforward set of engineering tradeoffs at play here. As written, use a water pump or make the case surprisingly big are solutions, using a power supply sufficiently oversized that it doesn't bother spinning up the fan. You can still expect reduced lifespan of the motherboard and maybe memory, it all really expects some slight airflow.

The good answer to "really fast computer I can't hear" is to put it somewhere else. Long HDMI cable or some variant on thin client and a network cable.

An interesting answer is the fanless cases where heat pipes dump heat into the case, but you're probably still under 100W for those.

I like a small x64 machine in the wire tray under the desk driving monitors and the real hardware somewhat far away.

Puget Systems makes high quality quiet workstations if you don't want to roll your own.

Fanless

Or

High end CPU/GPU

Pick one

Anything water-cooled.