For now I will trow picture of my HAF Inspiron here and see what can be added later.
So, Cooler Master HAF 912 happened to be my choice, there are many more capable cases, however it is important to remember the reason you will be looking for new case, if it is just fancy looking, anything would go, if it is for overclock, choose the one with more fans and holes for excellent airflow.
Here are a few views of my remastered Inspiron 570.
front view
front view a bit different angle
upper fans angle
upper fans straight angle
upper view
Next picture I will make larger - my fans explained, again there are many choices, I just showing a possibility.
1. This one came from CPU cooler, because it has PWM control and I wanted to have constant speed. When connected to 3 pin connector it works at max RPM. 2000 RPM, 82.9 CFM, 36 dBA
2. (2 and 3 same). Cooler Master A12025-12CB-3BN-F1 (came with my case HAF 912), 1200 RPM, 44.03 CFM, 17 dBA or 19.8 dBA (this fan sold as OEM parts only so parameters are approximate). This fan was in position of number 1 fan, dropped down as less essential.
3. Cooler Master A12025-12CB-3BN-F1 (came with my case HAF 912), 1200 RPM, 44.03 CFM, 17 DBa or 19.8 dBA (this fan sold as OEM parts only so parameters are approximate). This fan use to be an exhaust one, too weak, so it was replaced.
4. and 7. Same. CPU Push (4) and Pull (7). BGears model b Blaster, 2000 RPM, 103 CFM, 35 dBA. My strongest and loudest fans.
5. and 6. Same. Upper exhaust. Cooler Master, 2000 RPM, 69CFM, 19 dBA.
8. Exhaust. 3 speed controller box, I cannot hear it at max RPM, so it run at max all the time. Antec, 1200 / 1600 / 2000 RPM, 39 / 56 / 79 CFM, 25 / 28 / 30 dBA.
Exhaust fan (must have 3 pin I think or 4 pin) motherboard connector, so motherboard thinks that it has control, and extra connector for power (I have 4 pin Molex) so PSU pushes this fan to max.
CPU push fan is PWM controlled, so when hot it suppose to run fast, well, I tested many times my setup and it never reached max RPM, not even close. Remember, I was testing my new setup during last August (2012), it was HOT! So I have overheat at CPU. This is the reason for me to change my setup. I placed also CPU pull when I saw high temperature on motherboard, CPU pull solved this problem. So CPU fan has 4 pin connector (at motherboard), when 3 pin connected, there is no PWM control and CPU fan runs at max speed.
There would be a few words about power button wiring, in next reply I would discuss tools of trade I used, again I missed a few of them, but my goal was to test stability, not to burn my PC, I know, Inspiron 570 has limitations...