You do the same thing, just not so much of it. Just because a given CPU, memory, and motherboard combination will run at 4.0 GHz does not mean that you need to. Either way the process is the same. You start off at the stock speed, increase the settings to bump up the CPU speed in 100 MHz steps, and either stop just under the point of instability or where you want to.
You should not exceed Intel's maximum vcore recommendation for the CPU and keep your core temperatures under Intel's maximum recommendations. (My self-imposed thermal limits are 70 C.)
You do not just jump from the stock speed to your goal.