Good experience with ASRock for me but mileage may vary.
I'd drop the hard drive completely, drop the 680 to a 670, and use the money from those two things to buy the largest quality solid state drive (SSD) I could. That's all assuming you're not using this to store movies, music, etc as well.
What game do you play? If you don't play those high-end games then you can downgrade your GPU, and yea, the Toshiba is not a good one, get a Seagate Barracuda 500GB ST500DM002, it's better and you just need 500GB.
I would suggest a SSD for system and game installs and a normal HDD for storage. For a decent 500gb SSD drive cost bout 400-600 USD, however you might get away with a 256gbs SSD if you are good at managing installs. Also I would suggest not getting OCZ vertex drives I've had some bad experience with them and from other reviews I had read others experience the same.
I mean playing bf3 little skyrim trying graphic mobs...
so Seagate Barracuda 7200.14 - 500GB 16MB SATA3 - 6Gb/s should be good?
i would buy SSD but i'am not sure about my old HDD(gettind bluse screen "Dumping Physical Memory to disk" i try changing memory but it doesn't help), and there is no problem with motherboard? and what about 670 gtx and 680 gtx It is worth 100€ ?
What is your total amount of space used on your current drive after you have deleted games you no longer play? If that's a reasonable amount less than the biggest SSD you can afford you don't need a hard drive (again assuming you're only using this for gaming). All it requires is keeping crap you don't need off the drive.
i though about ssd and i'am not gonna take it because there is no performance in fps and i don't think i would like to spend 100€ so it load me 5-10 sec faster
but i did some changes, i put 670 gtx ftw save few euros and i think about motherboard under 150€(if any one know any better motherboard for that money please tell me),i change power supply to 750W i get other cooler for cpu (to overclock)