Use system settings or application options to turn off memory caching.
Use system settings or application options to turn off memory caching.
There isn’t a direct way to turn off memory caching in Windows. Adjusting prefetch, SysMain, or disk caching still leaves the system caching data. You can see this behavior in Task Manager or Resource Manager. Clearing standby memory is possible, but completely disabling it would affect performance significantly, especially on a fast SSD. It’s worth trying to understand its impact first.
Operating systems are typically built to quickly access essential files in RAM. Some are engineered to boot entirely from read-only storage. That’s not the case. Modern SSDs can read/write rapidly—hundreds of megabytes per second—while older RAM struggles at tens of gigabytes per second, with delays measured in nanoseconds. Even Optane drives may lag behind, though they offer some improvement. Remember, these high speeds mainly apply to large files; the OS relies on many small files, making performance worse than expected for SSDs.
RAM caching is a well-established idea in operating systems, likely embedded in every contemporary OS. On Linux, you might be able to bypass it by rebuilding the system from the ground up, though there’s probably no straightforward configuration option. With Windows, disabling it would be even more challenging and likely have severe consequences. Even if possible, the performance impact would be significant—your computer would struggle severely without caching, making it nearly unusable. This approach is generally not recommended because it leads to a slow, inefficient system.