Are there any high performance single-board computers on the market currently? I use a lot of Rpi's in personal projects, and I've been thinking about a home f

Are there any high performance single-board computers on the market currently? I use a lot of Rpi's in personal projects, and I've been thinking about a home file server in a super small form-factor. What I would like is an SBC somewhere on the size scale of a smartphone, with performance in the range of a current flagship phone. Does something like this exist?