The Silverstone Strider Plus 500W (ST50F-P) is quite impressive. Yes, it currently retails for $74.99 incl. shipping, nearly double the price of the ST50F-ES; however, it also is leagues ahead of the entry-level model in every aspect. The electrical performance is significantly better, with the voltage line ripple suppressed down to levels worthy of a performance product and efficiency which should exceed 84% most of the time during typical usage. It also runs much cooler and far quieter, making it ideal for use in everyday work and gaming systems, especially in quiet environments, where a noisy computer would be uncomfortable..."
There is a lot of free Microsoft software to be had, programs which enable better web surfing and help protect against spyware are just two types. PCSTATS Tips