Windows 11 requires 45% of available memory even when not in use.
Windows 11 requires 45% of available memory even when not in use.
But running MW3 puts a lot of strain on my PC. Other games don’t. It seems MW3 also consumes more memory than any other title I’m playing. The game should free up some cached RAM so more memory becomes available, leaving me with nearly 1GB to work with for the system and apps. I’m thinking maybe upgrading to a 32GB RAM setup would help. I’ve checked the current stats: the GPU is at full use, CPU around 80%, and RAM usage near 98%. My CPU doesn’t seem to be limiting performance. How can these utilization numbers indicate a bottleneck? Do they make sense in terms of resource constraints?
If you run all components at 100% or close to it, time to upgrade the whole setup or lower the settings. Windows uses as much RAM as it can since that is faster than having to load data from SSD. That is good. If you frequently use 75% of RAM, it is worth to get more. But in your case with CPU and GPU maxed out, RAM alone won't help.
Have you looked in Task Manager to identify which processes are consuming most of your RAM?
There’s often a slowdown point, but ideally the GPU should run close to full capacity, not the CPU. This happens because you can tweak game options to ease the GPU load, but if the CPU struggles to keep up, it won’t help much and might even drop below 60 frames per second. For someone who plays intensely at high resolutions like 1080p with low settings, a CPU bottleneck could be more impactful. That’s your situation—probably yes.
Empty memory space is just wasted capacity. Storing data in RAM while it's unused is far more efficient than leaving it vacant. When a program requires the cached memory, the operating system will make room for it. In essence, this behavior is typical and actually preferable to forcing optimization on empty RAM.