Seasonic upped its game by using its “Prime” technology for power supply units, which ranges from Gold to Titanium in terms of efficiency. Reputed brands like Asus' ROG and Antec's Signature line have also incorporated Seasonic's core platform in their own PSUs. 

Seasonic PSUs are at the top tier in terms of performance. It achieves tight load control on all rails and has excellent ripple suppression without the use of inconvenient in-line caps. It also has a great hold-up time. If you are looking for the best, the Seasonic Focus Plus 850w is a fantastic power supply with excellent build quality. And if you're on a tight budget, the Seasonic S12II 520w is a good option. Below are some more options to consider.