Yeah, it’s normal, you can’t compare a NUC with a premium Tiny PC.

NUC have budget / low end CPU (In you’re case, a Pentium Silver Jxxxx), While these tiny PC have Core i5 or Core i7. Can find model with 8th gen+ at very decent price.

Definitively

Small form factor tiny PC like a Lenovo Thinkcenter M720q or similar or an EliteDesk 800 or similar. They are very cheap used, have very decent CPU, usually 8GB or 16GB or more and a SSD.

Buying an overpriced and limited SBC instead of these is wasting money. Especially that you can upgrade them with a 4TB HDD & 2TB+ NVME drive, up to 64GB of ram. They have like 6 USB, 2 or 3 display output…

When they do almost nothing (like synced node for example), they use like 10Watts…

And you can mine on them too, and they are stackable :)