For a Greener PC: Granola for Windows

Granola is a new software application that helps you reduce the energy waste that coming from using a computer and leaving it on all the time. The program, smaller than a single MP3, is a “set it and forget it” type of application that automatically optimizes system settings without compromising performance or availability. Granola typically lowers the total system energy use by 10-35% even when a system is 100% utilized, the website claims. It also tracks the energy saved in order to estimate cost savings and carbon emission reductions. 

Granola uses a technology called dynamic voltage and frequency scaling or DVFS which is analogous to a “dimmer switch” on a light, says the company. When you don’t need the brightest light, you can dim it via a switch. DVFS works in a similar way – when it needs CPU at full speed, it allows that, but when the PC is in a lower state of activity (like reading a website instead of playing a game), it uses less energy.

You can download Granola for free from here.

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