By using efficient design, Microsoft’s Windows 8 is aiming to minimize the use of PC’s memory, which will allow this operating system to run on hardware which was basically designed for the Windows 7.
The Group program manager of the Windows Performance team, Bill Karagounis, in his blog post (opens in new tab) revealed that the aim of the group was always to build Windows 8 in such a way that it ships with the same performance requirements as Windows 7. The reason, according to Karagounis, is that this was done to reduce the power consumption by the Windows 8 when running on a tablet.
Karagounis wrote that “Something that might not be obvious is that minimizing memory usage on low-power platforms can prolong the battery life. Huh? In any PC, RAM is constantly consuming power”.
“If an OS uses a lot of memory, it can force device manufacturers to include more physical RAM. The more RAM you have on board, the more power it uses, the less battery life you get”, he added.
On how the Windows 8 minimize use of memory, Karagounis pointed out several methods such as combining memory, or the operating system’s ability to identify duplicate memory being used for identical tasks and then just retain single copy.