One of the most critical components of your system is the power supply. When that fails, nothing runs and that is where redundant power supplies come into play. The second one will kick in if the first should fail or the other way around. SilverStone built upon the previous Gemini models and created the new GM400-S, GM500G, and GM600-G redundant power supplies in a convenient PS2 frame.
As the name suggests, the new Gemini units come with two times 400W, 500W, and 600W load capacity. The 400W model only has an 80 Plus Silver certification where the 500W and 600W models come with an 80 Plus Gold certification. By combining industrial grade components, higher efficiency design, and the inclusion of PMBus 1.2, these power supplies should provide a stable and secure 24/7 solution that will fit in about any chassis.
The units are designed to be hot-swappable and come with convenient pull-out handle bars. The entire range is using an Active PFC, but they won’t come as cheap as a normal power supply. That is pretty much a given, considering that you actually get two when purchasing one. The GM400-S 400W PSU comes with an MSRP of $549.45 price tag, the GM500-G with a $593.45 price tag, and the GM600-G with a $636.79 price tag, all without VAT. That is a hefty price, but it is worth it when needed and considering what you get.