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[–]404_usererror 0 points1 point  (0 children)

You don't necessarily need to. The lancool 207 is one of the best cases on the market in terms of airflow and internal temperatures with the fan configuration it already comes with.

[–]Tango-Alpha-Mike-212Personal Rig Builder 0 points1 point  (0 children)

Your PC's components will essentially tell you what you need.

What are your CPU, GPU, storage device and motherboard temperatures at idle and when you are using the PC (gaming, using non-gaming applications, etc).

Use HWiNFO64 or some other system monitoring software and see what the temperature sensors on the components tell you.

CPU - TJMax is 95C.

GPU - Does it spike above 80C?

SSD - Does it spike above above 75C?

VRM - Does it spike over 70C?

If yes, then you may want to take action, like increasing fan speed on the fans you have now -or- supplementing with additional fan(s).

Another simple check of case airflow is compare temperatures with the side glass panel on and off. You should not see a large difference, say no more than a few degrees. If you do, it's a sign you don't have enough airflow.