 As RAM frequency is increased, however, the stability of the system decreases, increasing the risk of random computer shutdowns.8 GB is usually the recommended amount of memory for gaming computers, as some 64-bit games can use over 4 GB of RAM.RAM capacity is also an issue with gaming PCs, and usually at least 4 GB or more, depending on how many RAM slots the board can hold, and whether it supports 4 or 8 GB modules.