Hi guys i need some help. I have a Cooler Master K-350 case, and i think this case has a bad airflow and it's making my cpu and gpu temps go very high (around 60ºC for the gpu and 70º for the CPU) so i was thinking of getting a new case, the thing is i don't really understand about PC cases and cooling. So can you guys help me with this? I've been seeing reviews and have 3 cases in mind: the Corsair 400C, the NZXT S340 Elite and the Phanteks Eclipse P400, are these good choices? And what CPU cooler (my CPU is a i5-6600K, which i would like to overclock) do you recommend? And what about fans for this case? I'm a beginner in PC building, so all the help is appreciated.