I have bought a new fully modular 650W power supply to build a new system. First, hooked it up to an old system based on 2nd generation i5 and after to a new Ryzen 7 rig with the same hard drives and etc. In both cases the power supply draws 70-80W when the computer is running for web browsing, which is fine.
What I do not understand is why after the operating system (Windows 10) has been shutdown, the power of 50W (~0.2A current on 240V) is drawn and does not reduce below this figure even when all cables from the power supply (including the motherboard) were disconnected. When the power switch is turned off, the power consumption does go to zero. I have measured power using powermeter PM230. One of the old and much cheaper power supply under the same conditions takes ~17W, while another system was showing near zero, could not measure how much was consumed.
I have bought one of the power supplies (650W gold 80%) reviewed here and puzzled why the standby consumption is nowhere near what was achieved in the reviews here. Any comments or suggestions are welcome.
What I do not understand is why after the operating system (Windows 10) has been shutdown, the power of 50W (~0.2A current on 240V) is drawn and does not reduce below this figure even when all cables from the power supply (including the motherboard) were disconnected. When the power switch is turned off, the power consumption does go to zero. I have measured power using powermeter PM230. One of the old and much cheaper power supply under the same conditions takes ~17W, while another system was showing near zero, could not measure how much was consumed.
I have bought one of the power supplies (650W gold 80%) reviewed here and puzzled why the standby consumption is nowhere near what was achieved in the reviews here. Any comments or suggestions are welcome.