Tips for overclocking? I need to cooldown cpu.

[Kill Binho]

Overclocklin cpu has been a challenge for me, I never had an idea how to do irl, so in-game my biggest problem is that the cpu is always overheating. I am able to overclock and keep system in check, but costumers will always give me 1 star 'cause cpu is overheating. Since is a OC job not a build, I can't exchange parts, I have to use what is already there. I tried adding case fans but I don't see the difference, it's always in 90°C degrees.
I tried google-ing, but all the search results are about building a PC and have the option to change cpu cooler as much as you like. I have to use the costumer's.

[🦊Λℚ𝓤ΛƑΛᗯҜᔕ🦊]

Some suggestions for you:

In this game the game calculates cooling performance as "The entire system". That is even if you add a water cooler / AIO to the system for the processor, you can still increase the cooling effectiveness in terms of processor temperatures by adding more fans to the case, even though they are case fans and not connected to the water cooler. Also if you are building custom loops with multiple radiators you need to remember to focus on "Total CFM Figure". And pay attention to the CFM rating of fans and radiators. When you add up the total CFM (Additive) from all case fans + AIO / radiators you will have the system's cooling capacity, in terms of how this game works.

So TL;DR: Case fans matter. More fans. Highest CFM rating on fans = more better cooling.

Also you need to bear in mind that this game does have a silicon lottery simulated in the game as well. What that means is: All processors are unique, even if they are the same model number. You could buy 1000 x I5-6600K's from the store and every single one of those 1000 processors will all have a different temperature they operate at, for a given clock speed. One I5-6600K may run 90c @ 5000 Mhz while a different I5-6600K may run 80c at 5000 Mhz for example. It's completely random. You may just have been given a dud from the customer that runs hot.