Can anyone please suggest me an affordable full tower capable to take in 6 - 7 hard disk and and a good power supply unit with many SATA power chords which can run a Intel Quad Core Q6600 on Intel DG33FB and a HD Radeon 5870 or a Hd Radeon 6970 ??
To be honest, you'll probably find that the vast majority of full tower cases would support 6 or more HDDs. Likewise they would more than likely be large enough to accomodate full length graphics cards such as those you mentioned. A few examples though in no particular order:
Coolermaster HAF932, Coolermaster HAF X, NZXT Phantom, Antec 1200, and obviously Lian Li's full tower cases. Be sure to double check they have the required number of drive bays etc beforehand though since these are just off the top of my head.
As far as PSUs go, again you'd be better off checking individual PSUs for connectors first but I'd say a solid unit around the 600W-700W range would do you fine. Recommended brands are Antec, Corsair, Seasonic etc.
Antec DF-85 .... not only will they fit up to 9 HD's but there are 4 internal "Fleet Swap" drive bays in there that will let ya insert / remove / swap HD's or SSD's w/o plugging / unplugging power and data cables....and yes, ya can buy more cages if you want to. There's also a hot swap 2.5" SSD / HD bay and a bottom mounted 2.5" swap bay.
- Up to 9 x internal 3.5"
- Up to 6 internal w/ 3 external
- 3 x external 5.25"
- 4 x internal 3.5" Fleet-Swap™ drives (position changeable)
- 1 x external top 2.5" hot-swap SATA drive bay
- 1 x internal bottom-mounted 2.5" SSD drive