Seasonic Prime Titanium TX-1300 (1300W PSU) review

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Seasonic Prime Titanium TX-1300 power supply

Today we’re putting the new Seasonic Prime Titanium TX-1300 power supply on our test bench. The company is mainly known for its PSUs (like Connect or Focus SGX), but we also already checked their two chassis (Q704 and Q503). Still, the high-end offer in the power supply range is the Prime series. The series debuted in 2016, but the TX-1300 and TX-1600 were released in July ’22. Both are not ATX 3.0 compatible (this will come in mid-December with a Vertex PSU family). Still, one of the new things introduced in the Prime Titanium TX-1300/TX-1600 (but also the 80 Plus Platinum compatible PX-1300/PX-1600 models) is the PCI Express® 5.0 compatible 12+4-pin power cable. Although the TX-1300 is a new PSU featuring two 12VHPWR connectors, it still isn’t ATX 3.0 compatible. You get a 16-pin capable of providing up to 600 W (12+4). So what does it mean exactly? Geforce RTX 30xx/40xx Founders Edition will work with Prime Titanium TX-1300 PCIe Gen5 connectors simply because they do not need more than 450W. The other versions of RTX 4090 – can get more than that, which should work too.


Under the hood, we have a (what a surprise) Seasonic platform with the highest quality and reliability that distinguishes this brand. Seasonic Prime Titanium TX-1300 is an ATX power supply with a semi-passive mode. This time, it’s an 1300 Watt model (in black) with an 80 PLUS® Titanium certificate, which means that it’s 94% efficient at 50% load @ 115 V, and 96% efficient @ 230 V. It is crucial because less consumed energy goes to waste (at least not in a significant amount), and that should affect your energy bill. It is essential in these wicked times, where energy prices skyrocketed recently. Speaking of the fan – it’s 135 mm with PWM control that allows lower noise and keeps thermals in check. It’s possible to disable the fanless mode.



SEASONIC PRIME TITANIUM TX-1300 is a fully modular PSU; even though the motherboard connectors are not permanently attached to the housing, you still have to use most of them. Nearly all cases have a power supply shroud now (at least ATX-sized ones do), so the unit and the cables will be hidden in most scenarios. There are no color variants, the only one available is black, but that’s typical for this kind of product. We can agree that there’s nothing left to be desired in the wattage department. The 1300 Watts available in the reviewed unit should be more than enough for most users; even an i9 13900K combined with the Geforce RTX 4090 shouldn’t be a problem. The SEASONIC PRIME TITANIUM TX-1300 is built with 100% Japanese capacitors and other premium components to achieve 80 Plus Titanium Certification; thus, that provides enhanced reliability and durability. Ok, let’s check out this PSU from Seasonic, shall we? The unit is not compact, as it measures 210 mm x 150 mm x 86 mm. The retail price is about 460 EUR. A 12-year warranty backs SEASONIC PRIME TITANIUM TX-1300.

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