Overclocking
AMD includes an unlocked multiplier with the Ryzen 5 2600, so we're able to have some fun with it. We set a voltage of 1.4 V, which is in line with what a good air cooler can handle, and increased frequencies step by step. We were easily able to get it up to 4.00 GHz stable across our bench. 4.1 GHz was out of reach, even with 1.45 V or a 240 mm AIO.
If you've read the previous page, you'll know that the Ryzen 5 2600 sustains 3.75-3.90 GHz comfortably without any manual overclocking on your part, so forcing it to run at 4.00 GHz won't achieve all that much in terms of performance. You're effectively only gaining 100-250 MHz compared to an untouched chip, which, depending on the thread-count of your applications, can turn out to be significant.