大家帮忙,我在网上电脑点预装了一台电脑,尤其是显卡的牌子我不太熟悉,大家帮我看一下这个配置里面有什么猫腻的地方吗

System Components:
CPU: Intel Core i7 3770K
Motherboard: ASUS Sabertooth Z77 Motherboard
Graphics: 2x Palit GeForce GTX Titan 6GB
Memory: Corsair Vengeance CMZ16GX3M4A1600C9 16GB (4x4GB) DDR3
Hard Drive: Seagate Barracuda 2TB ST2000DM001
Solid State Drive: Samsung 840 Pro Series 256GB SSD
Optical Drive: ASUS SDRW-08D2S-U Lite Black External DVD Burner
Case: Corsair Vengeance C70 Mid Tower Gaming Case Arctic White
Power Supply: Corsair AX1200 Gold Power Supply
CPU Cooling: Corsair Hydro Series H100i CPU Cooler
Additional Case Cooling #1: Corsair Air Series AF120 Quiet Edition Case Fan
Additional Case Cooling #2: Corsair Air Series SP120 Quiet Edition Case Fan Twin Pack
Case Lighting: BitFenix Alchemy Connect 30cm White LED Strip
Operating System: Microsoft Windows 7 Professional 64bit with SP1 (*Windows 8 also available if preferred)

买这个系统我是想要回来好好超频一下,我不会超频,麻烦大家告诉我一下改怎么超,这个配置大概可以超到多少?

多谢