Corsair recently released the third version of their popular TX power supply series, dubbed "M" for "Modular." However, it is really important to understand that this new version isn't simply a TX or TX V2 power supply with a modular cabling system added; the internal design is completely different. The TX M series has 550 W, 650 W, 750 W, and 850 W models, all with 80 Plus Bronze certification. (The TX V2 series doesn't have a 550 W version, and Corsair still offers a 950 W model under the first TX series.) We've already reviewed the 750 W version of the TX M series; now it is time to review the entry-level, 550 W model.