Memory compression in Windows 11 serves as a crucial feature allowing the operating system to manage memory more efficiently. Rather than transferring data directly to the disk when RAM is limited, Windows compresses the data and retains it in RAM, which enhances speed by reducing latency. This decision is particularly beneficial for systems with lower memory.
While it incurs some CPU overhead due to the need for decompressing data, this cost is often negligible on modern machines. As a result, users typically experience improved performance, particularly during light workloads. In scenarios involving heavy processing tasks, such as rendering or simulations, the effects of compression become more apparent, yet even then, contemporary CPUs generally handle the additional load effectively.
Microsoft appears to prioritize this feature by enabling memory compression by default, aiming to ensure that Windows can perform well across a wide range of hardware setups. Although this approach has not been officially explained by Microsoft, it acts as a safeguard for devices with limited memory resources.