113,640. Oct 19, 2015. Solution. #2. That PSU is a piece of junk. That wattage calculation is excessively high there is no way that system requires 600 watts. Maybe 350 tops. Get yourself a Seasonic 420w or 520 w or the XFX TS 550. They are a little more than 50, but you will regret cheaping out on your PSU. Calculate electricity usage and cost per hour, day, week, month, year and decade. The energy cost calculator computes how much power (in watts, kilowatts, megawatts, and in gigawatts) an electrical device consumes per hour, day, week, month, year and even ten years (a decade), and total cost associated with this electricity consumption. For speed cycling, riders typically need to sustain higher wattages, often in the range of 400-600 watts or more, to achieve speeds upwards of 30 mph. Is 300 watts a lot cycling? 300 watts is a respectable power output for many cyclists. The 1000W would then draw 300/0.7 = 428W and the 500W supply would draw 300/0.85= 352W 428/352 is 1.21 i.e. 21% more power is used. = 73W. Given a more normal estimate of 80% and 85%. 300/0.8 = 375, 375/352 = 6% more power = 23W. The size of PSU is only relevant in that the efficiency at a given wattage will be different, yes 20% of 1000 is Watts is a measurement of the power you are producing. It is how much energy is needed to overcome inertia and make things go, like pedaling your bike, climbing stairs, powering the elliptical or even running on a treadmill. Simply speaking, the more power you are producing, the harder you are working. So, should you be more involved with this Sorted by: 50. No. A 500 Watt Power Supply can DELIVER 500 Watts, but it will ever use only as much as the components in your PC need (and of course that depends on Load and Activity, if Energy Savings Mechanisms like AMD's Cool'n'Quiet or Intel's SpeedStep is enabled etc.). In Theory, with a 100% efficiency rating, which is impossible. .

is 600 watts a lot