A more accurate calculation would be possible using a "power consumption Meter" but they are not available at affordable price in India.
However ebay USA lists many for around 10usd.
Having a 600w desktop SMPS doesn't mean it will consume 600watts at all times, depending on System Load and connected peripherals this would vary.
However ebay USA lists many for around 10usd.
Having a 600w desktop SMPS doesn't mean it will consume 600watts at all times, depending on System Load and connected peripherals this would vary.