"It's been a while since I reviewed a Seasonic product, and figuring out and witnessing the performance Seasonic's flagship Prime Fanless model offers has been interesting. The TX-700 in many ways shines, but its overall performance failed to impress me, and the whole package doesn't look as appealing as it could because of its stiff price tag. In terms of overall performance, the TX-700 loses notably to an older sample of the Prime Titanium Fanless 600 W model I had evaluated two years ago. Two more TX-700 samples I have on hand performed similarly to the one reviewed here, with overall performance still considerably lower than the aforementioned 600 W fanless model."
Source: TechPowerUp