The be quiet! Straight Power 12 850W wins in 3 out of 9 comparable specs, with 4 ties. Its biggest advantage is Efficiency (25% better).
MPG A850G PCIE5 wins in 2 specs (PCIe Connectors: 40% better).
Recommendation
Choose Straight Power 12 850W if you want the best overall performance — especially efficiency.
Choose MPG A850G PCIE5 if pcie connectors matters more to you.
