The memory capacity also has a great influence on the performance of the computer. For old computers, 4G is barely available. It is recommended to upgrade to more than 8G memory, because larger memory can ensure the computer to run better and smoother under multi-tasking, switch freely and reduce the chance of jamming.
Now the memory is not expensive, DDR4 is only 8G, but it is around 200 yuan, so it is easy to upgrade. But before upgrading, be sure to check whether your computer motherboard supports DDR3 memory or DDR4 memory.