hey man, i know that you're a genius in computers.the best i have ever seen 
i was thinking of building my first gaming computer and after 2 months of searching and researching i reached this results
CPU (intel core i7 2600) and a (Cooler Master Hyper 212 Plus) as a CPU cooling unit
case (NZXT Phantom case)
RAM (G.skill Sniper Low Voltage Series 8GB (2 x 4GB) DDR3 1600 CL9 1.25v )
VGA (SAPPHIRE AMD Radeon HD 6970 2GB GDDR5 )
PSU (Cooler Master GX650 650w Bronze Certified PSU)
HDD (Western Digital (WD) Caviar BLUE WD5001AAKX 500GB SATA 6.0 Gb/s16MB Cache HDD )
Motherboards i couldn't choose between Gigabyte GA-Z68XP-UD4
Gigabyte GA-Z68XP-UD3-iSSD
ASUS Maximus IV GENE-Z
ASUS P8Z68-V PRO
then i watched your video about bottleneck and i was afraid that i will mess every thing up so i wanted to ask an Expert like you
so, could you please tell me which motherboard should i buy,your overall opinion in this computer and it's comparability and would be there any bottlenecks ???????
i was thinking of building my first gaming computer and after 2 months of searching and researching i reached this results
CPU (intel core i7 2600) and a (Cooler Master Hyper 212 Plus) as a CPU cooling unit
case (NZXT Phantom case)
RAM (G.skill Sniper Low Voltage Series 8GB (2 x 4GB) DDR3 1600 CL9 1.25v )
VGA (SAPPHIRE AMD Radeon HD 6970 2GB GDDR5 )
PSU (Cooler Master GX650 650w Bronze Certified PSU)
HDD (Western Digital (WD) Caviar BLUE WD5001AAKX 500GB SATA 6.0 Gb/s16MB Cache HDD )
Motherboards i couldn't choose between Gigabyte GA-Z68XP-UD4
Gigabyte GA-Z68XP-UD3-iSSD
ASUS Maximus IV GENE-Z
ASUS P8Z68-V PRO
then i watched your video about bottleneck and i was afraid that i will mess every thing up so i wanted to ask an Expert like you
so, could you please tell me which motherboard should i buy,your overall opinion in this computer and it's comparability and would be there any bottlenecks ???????