SeaSonic late last week launched three new fanless PSUs under the Prime Fanless series. The company expanded its Prime Fanless TX line of 80 Plus Titanium-certified power supplies with a new 700 W model, the Prime Fanless TX-700. This tops the series which has been led by a 600-Watt model since its debut back in 2017. The TX-700 offers full modular cabling, well over 95% efficiency with 230 VAC input, micro-tolerance load regulation (MTLR), APFC, most common electrical protections, and connectivity that include two 8-pin EPS, four 6+2 pin PCIe, and twelve SATA power connectors.

Next up, SeaSonic expanded its Prime Fanless PX line of 80 Plus Platinum certified PSUs with new 500 W and 450 W models. You get largely the same electrical feature-set as the Fanless TX series, but with around 93% efficiency at 230 VAC. You still get two 8-pin EPS connectors, but only up to two 6+2 pin PCIe power, and eight SATA power. SeaSonic is backing both its Prime Fanless TX and PX lines with an industry-leading 12-year product warranty that's probably supported by the fact that these PSUs have no moving parts.