The be quiet! Straight Power 12 1000W and the be quiet! Straight Power 12 850W are objectively tied, as both units share identical specifications across seven of the nine measured categories. The primary differentiator between these two power supplies is their specific capacity and cost positioning. The 1000W model offers an 18% advantage in total wattage, while the 850W model provides a 16% advantage in MSRP, making each unit superior in one distinct area of the comparison.

Choose the be quiet! Straight Power 12 1000W if your system configuration requires the additional power headroom provided by its higher wattage capacity. Conversely, select the be quiet! Straight Power 12 850W if you want to prioritize the 16% MSRP advantage for a build that does not necessitate the extra output. Both units offer the same core feature set, allowing you to base your final decision strictly on your specific power requirements and budget constraints.