Efficiency Normal, Light & Super-Light Loads
Efficiency is high on all load ranges. Still, the previous model achieved better results at light and super-light loads.
Average Efficiency
The average efficiency meets the Cybenetics Platinum criteria.
Average PF
The APFC converter achieves good performance.
Average Efficiency 5VSB
The 5VSB rail’s efficiency has been significantly improved compared to the previous model.
Vampire Power
Vampire power is increased at 230V.
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The PowerZone has relatively loud transformer noise, even in standby. You can hear it from the next room. Otherwise, it’s electrically quiet — no coil whine or other weird stuff — but the base hum is quite loud. What about this one?
Can you recommend a power supply that’s completely silent, even in standby? I’ve tested a few and ended up sticking with the PowerZone 2 because it’s a good all-rounder and gets a lot of things right. But that low hum or faint squeal drives me crazy. Every morning I wake up thinking, “Damn, I forgot to switch off the power strip again before going to bed
I have almost gotten Be Quiet Power Zone 2 750 W. I actually have it pending, right now I am considering Pure Power 13 M, as judging by tests it looks quite good.
I returned Thermaltake toughpower due to loud fans even at idle.
Right now I am running Corsair MN750X 750 W and I would appreciate quieter fans. But it is not bad. Also I had not experienced any coil whine, even when trying out uncapped games at up to 800 FPS. But my setup hardly needs 300 to 350 W at max, and does not really strain the PSU.
the Pure Power 13M line is really good. I would go with one of its members.