Recently my HP Pavilion died (2000-2011) and I'll be building a new one. Every 2 years I change my HP PSU since I use generic ones and the dust is unbearable, I can barely see the mobo and I think a newly evolve species is living inside there. Since it'll be a PC that will be running 24/7; I need a case that is sealed enough or with filters with less fans to lessen the dust build up. It's going to be a really low-spec machine with ultra durable mobo, so the heat won't be that great. Thanks!