The efficiency of the NZXT Hale82 V2 550W power supply is not very high but it does surpass the 80Plus Bronze certification limits. We recorded a maximum efficiency of 87.3% at half load, with a supply voltage of 230V AC. The efficiency drops by about 1.2% when the input voltage is switched to 110V AC.
The noise levels of the NZXT Hale82 V2 550W unit are reasonable. The power supply is very quiet up to 60% load. Beyond 60% load however, the fan of the power supply speeds up and becomes clearly noticeable. Even at maximum load however, it does not becomes overly loud for a mid-range power supply.
Thermally, the NZXT Hale82 V2 550W unit is mediocre. It appears that the company optimized it for low noise operation, sacrificing some thermal performance, as the temperature rise is significant given the power output of the power supply. Still, the chassis of the unit feels warm only after it has been running under heavy load (>80%) for several hours.