If you are a gamer, there are certain things that you cannot do without such as a good CPU and a Graphics card which is probably the most important thing since it contributes immensely to the performance of your rig. More so, it is important if you are into anything that has to do with video editing and rendering.
Because...
In terms of the performance of your computer, a lot of things come to play. One of the most important is the cooling system you are making use of because one serious bane to performance is heat generation.
The simple mechanics behind your computer performance is that the cooler you can keep your CPU and GPU, the faster your system...