Thanks a lot for your answer!
Actually my idea is to build a durable high end SFF gaming system like this:
- i5 760 cpu @ liquid with Coolit Eco c240
- P55 chipset motherboard
- a couple of 460GTX in SLI
- 850W Silverstone strider plus psu with short cables optional set
- 2x3.5" Sata HDD (Data drive, raid 1)
- 1xSSD (system drive)
- DVD drive
Because I'd only use one optical drive, I could fit 3.5" had drives in the other 5.25" slot with adaptors. Moreover I see a build of a qmicra v2 in which the bottom was drilled in the space between motherboard and frontpanel to mount 2 2.5" drives direcrly on it (screwing them directly to the bottom of the case, form outside) but I'm not so sure I'd drill this beautiful case...
To hold two front fans, i could use Aluminium "L" Profiles, drilled to screw in the fan and fixed to the case with double sided strong tape, for example...
It's all in my head yet...