Silver Power SP-SS500
The 500 W SP-SS500 from Silver Power is one of the few units to not have cable management. The connection cables are coated along their full length, which means that they are somewhat stiff at the drive connectors, with the exception of the SATA cables.
The power supply is relatively quiet at low and medium loads, but when put under high load, the 120 mm fan rotates quickly and the power supply becomes rather loud. The voltages are very stable, and do not change even under high load.