After much research, I came to the conclusion that Fujitsu E910 and E920 are the SFF category winners.
\- Thick steel case that can take a monitor on top of it with ease.
\- Has grilled vents on top of the PCI slots area.
\- 92mm intake fan that blows towards the CPU and GPU.
\- Perfect engineering of the cooling system from the front to the back.
\- PSU 250 watts (capable of 280 watts for 20 seconds), 92% efficiency Platinum.
\- Can take 3 x 3.5" HDD (one in the dedicated slot, one in the 5.25" bay, one in the 3.5" floppy bay).
\- Made in Germany.
The E910 is 3rd gen Intel and the E920 is 4th gen Intel.
Here we have the E910 with the following specs:
\- i7 3770.
\- 2 x 8 Gb DDR3 1600 Mhz Crucial Ballistix that force CL9 timings.
\- 6 TB 3.5" HDD.
\- 750 GB 2.5" HDD.
\- 256 GB SSD.
\- GTX 750ti lp for win XP.
\- Quadro K620 lp for win 7.
\- Quadro T1000 lp (GTX 1650 equivalent) for win 10.
\- Noctua 92x25mm intake fan.
\- Noctua 60x25mm intake fan.
\- Thermalright AXP90 x47 copper heat sink with 92x14mm Noctua fan.
Unit has been painted with RAL 6014 matte, and another transparent protection layer of 2k paint.
Unit has a home-made front grill in the place of 5.25" bay that is taken from a Dell 3020 MT front cover, painted and cut to fit.
Monitor is 24" EIZO medical grade made in Japan. 60hz.
Keyboard is mechanical made in Ukraine.
Mouse is Logitech G102.
Mouse pad is Logitech.
Speakers are Bose Lifestyle Active 30 watts manufactured in 1990. Also sprayed with RAL 6014 and 2k.
I have one more motherboard, 3 more PSU, an i5 3470, an i5 3470T ( the most powerfull dual core, 35 watts, 3rd gen CPU for win XP) as spare parts. Also plenty of DDR and HDD. 3 more monitors, one mouse and one keyboard.
This PC is always on sharing and downloading torrents. It is used daily. Movies, DOTA, Heroes 3, web browsing.
It has windows 7 professional genuine.
Soon to join the ranks is the Fujitsu E920.
I hope you guys like it.
Edit. The stock CPU heat sink does a much better job at cooling the CPU than the x47 copper.
It keeps the i7 3770 at 65° under prime95 tests, while the x47 copper manages only 72-74°.