The be quiet! Straight Power 12 1000W is the objective winner of this comparison, securing victories in five out of nine evaluated specifications. Its most impactful advantage is the inclusion of a 12VHPWR connector, which represents a 100% improvement over the alternative. This feature provides superior compatibility for modern high-end hardware, establishing the unit as the more technically robust option for users prioritizing current connectivity standards and higher total power output.

Choose the be quiet! Straight Power 12 1000W if you require the 12VHPWR connector for modern graphics cards and need the higher 1000W capacity. Conversely, the Fractal Design Ion+ 2 Platinum 860W is the better choice for budget-conscious builders who do not require the latest connector standard, as it offers a 21% advantage in MSRP. Select the latter if your system power requirements are adequately met by an 860W unit and you prefer a lower initial investment.