Since you mentioned a D15 and therefore we're strictly in the air cooling category, where exhaust is as important as intake.
- For mini ITX or micro ATX:
My recommendation to anyone wanting a combination of 'decent', 'reasonable', no setbacks and affordable:
(no window, side vent instead; normal people[tm] approved)
For better build quality, improved CPU cooling performance but decreased
GPU cooling and
a higher pricing (but still worth every penny):
- For ATX or eATX it gets tricky..
Combining best cooling performance, without sacrificing much/anything in other areas and without windows (which btw makes for a rather short list):
(non windowed version exists, looks however are.. well.. subject to personal interpretation)
Same performance, but cheaper:
(non windowed version also available)
((i'm not mentioning the original Raven because it has GPU length limitations that may come back to bite you in the behind; unfortunately, as it would have been at the top otherwise))
This is an odd one, but.. hey, it's overclock.net! If you need a looot of space for drives, removables, bays, etc. and don't mind: i) getting your hands dirty with some modding (namely making it inversed and re-riveting/re-cabling internals so you can have one more fan for your CPU cooler) and ii) its looks, this can really surprise you.. did the alterations for a family member and if it weren't for how it looks, i'd have bought one for myself. Catch is, they're hard to come by, been EOLed for years now. Also sturdy as hell:
(non windowed, multiple side vents, better GPU cooling and again, for air cooling)
Not surprisingly, they're all older models, but still available. Lastly since they've both been mentioned, i wouldn't even consider Fractal or Phanteks, especially for air cooling
, money for nothing. They have limited intake (for different reasons) and Fractal cases specifically are meant for the kind of people thinking IKEA=quality. Because "for the masses" rings kinda bad to their ears.
Will edit to add more as/when it comes to mind, been a while