I've got 2 pcs, one is running fairly cool and I believe it will sustain during the hot summer as well. The other system is using an older case and is constantly running 10-15 degrees higher and I'm really worried about it getting overheated in the summer as I don't always run my AC.

Is it better to have it out without a case sitting somewhere? Or should I try to get another one that's same as my first one?

How do people go about setting up their rigs?

Thanks!