RAM

RAM can appear slower than its label for two different reasons: the program is showing the memory clock instead of the DDR transfer rate, or the PC is actually using a lower configuration. Check the units and active settings before changing XMP or EXPO. A kit’s advertised rate is not a guarantee that every CPU, motherboard and module combination can run it. First, decide whether the numbers really disagree Open Task Manager → Performance → Memory and note the speed label, value and total capacity. If you use CPU-Z from CPUID, its Memory tab reports the active DRAM frequency. The SPD tab describes module information and stored profiles; seeing a faster profile there does not mean it is currently enabled. ...

Choose the memory generation your exact motherboard supports. If your DDR4 PC already has enough memory and meets your performance target, DDR5 alone is not a reason to replace the platform. For a new build, compare the total CPU, motherboard and memory cost—not a universal FPS promise. The confusing part is that a faster-looking number can describe a different thing. DDR5-6000 CL30 and DDR4-3200 CL16 both have a calculated CAS component of 10 ns. They do not therefore have identical complete memory latency, bandwidth or gaming performance. Here is how to make a choice without turning a timing formula into a benchmark. ...

Request Windows says virtual memory is low, an app warns that memory is not enough, or Task Manager shows a large Hardware reserved RAM number. I am not sure whether to change the page file, add RAM, or change BIOS settings. Start with the safest reset: put the page file back to System managed size, restart, and test the same app again. Do not type a huge fixed number, turn the page file off because the PC has an SSD, or change firmware settings before you know which memory problem you actually have. ...