Thermaltake Toughpower GX1 700W Power Supply Review Thermaltake is no stranger to HardOCP when it comes to making Toughpower PSUs. We have used these for years ourselves. The newest Toughpower is part of Thermaltake's GX1 series. This GX1 700 watt unit touts Gold level efficiency, a fluid dynamic bearing fan, and is oddly not modular in any way, which is something very unusual in today's market. If you like our content, please support HardOCP on Patreon.