A good power supply will form a solid foundation for years of reliable service for your trading computer. Power supplies compensate for many power problems that can occur and need to deliver smooth, direct current to your trading computer at three different voltages.
The bigger the power supply the better. At least 500 watts is recommended to overcome the starting power surge of the computer. Larger power supplies do not use more electricity, they just have the ability to supply more power to your trading computer if they need to. Over time your power supply will get dusty inside and this dust will act as insulation causing the components run at a higher temperature. A trading computer with an oversized power supply will perform smoothly and last a long time, even if it is covered with dust. The polymer electrolytic capacitors used in the power supply is extremely important. Chinese made capacitors fail far more often than Japanese or US made capacitors. The best capacitors are Chemi-con, Hitachi, Panasonic, Rubycon, Nichicon and Sanyo/Suncon. US capacitors are made by Cornell Dubilier/Illinois Capacitor Kemet, Vashay, and EPCOS.
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