Both RAM Size and Processor Speed are important to check the performance of any device, be it a laptop or a desktop, as both work in combination to provide you with high performance. RAM is considered the core of any device as all the instructions get stored and loaded there. So, the more RAM, the faster the device will perform. On the other hand, the Processor is the brain of the computer responsible for regulating the clock speed. More cores and clock speeds will result in better performance. So, both RAM and processor must be high to provide faster and better performance.