The new StealthXStream 2 600 W really surprised us. It achieved up to 87% efficiency, with numbers that would easily qualify it for the 80 Plus Bronze certification, even though it carries only the standard 80 Plus. Voltages were always very close to their nominal values (3% regulation), and noise and ripple levels were very low at all times.

We could pull up to 712 W from this power supply with efficiency still above 80%. So you buy a 600 W power supply and get a 700 W.

Compared to the original StealthXStream 600 W, the new model uses stronger +12 V rectifiers and switching transistors, two active PFC transistors instead of three, and one of the video card power connectors was upgraded to a six/eight-pin model.

On the down side, we think it could have more SATA connectors.

Costing only USD 80 (or USD 60 after a mail-in rebate), it is a very good option for the user looking for a good entry-level power supply.