I'm happy to answer any questions around this! We've been working on this since update since we launched the product last year, so we're excited to be able to share it today.
I don't think this works well with x86 chips. The performance of ARM in this low power budget is unmatched, especially looking at Apple's M1. And even they need fans to sustain the clock speeds.
An MS Surface Pro 7 with an Intel Core i5-7300U is fanless. I know I won't be getting the very bleeding edge topmost performance with fanless, but I can still get it plenty awesome. The silence is just a different level of experience, that I'm absolutely addicted to.