Will Processor Matter for Gaming?

Well, aside from the obvious "the system won't even run without a CPU", yes, a CPU always matters in gaming. It's why you'll see games have "minimum" and "recommended" system requirements. That being said, there are games that will make even brand-new CPUs struggle, & games that will still run on ancient Core 2 Duos.

Does processor really matter for gaming?

Both the CPU and GPU are important in their own right. Demanding games require both a smart CPU and a powerful GPU. ... Others may not because they are programmed to only use one core and the game runs better with a faster CPU. Otherwise, it will not have enough power to run and will be laggy.

Is a faster CPU better for gaming?

For gaming, clock speed is more important than the number of cores: Higher CPU clock speeds translate to snappier performance in simple, common tasks such as gaming, while more cores will help you get through time-consuming workloads faster.