Refresh my gaming PC

[lglsg]

Hi everyone i bought my gaming pc last year (June 2013) and i would like to refresh my reg with a new graphic card.

 

Somone can help me ???

 

i have 400$ to spend and i would like to buy a  Nvidia GTX 970.  

 

i would a lot of opinions and advices to make my choice !!

 

this is my reg

 

Case:                     --> PC Zalman Z11 Plus

Référence:            --> ZM-Z11PLUS
 

RAM:                     --> Dual Channel DDR3 Corsair Vengeance, 2 x 4 Go, PC3-12800, CAS 8

Référence:            -->CMZ8GX3M2A1600C8
 

Motherboard :       -->Asus P8Z77-V Le Plus
Référence:            -->ASUS-P8Z77-V LE PLUS


Processor:            -->Intel Core i5-3570K (3.4 GHz)

Référence:           -->BX80637I53570K

SSD:                     -->Crucial M4, 256 Go, SATA III
Référence:           -->CRUCIAL-CT256M4SSD2


Power Supply:      -->Corsair GS700 Edition 2013, 700 W
Référence:           -->CP-9020064-EU
 

Graphic card:       -->MSI GeForce GTX 660 Ti OC Power Edition, 2 Go
Référence:           -->MSI-N660TI PE 2GD5/OC


Cpu cooler:          -->Ventirad Noctua NH-U12P SE2
Référence:           -->NH-U12P-SE2
   

[SimpleG]

970 will be great! I would reccomend;

G1 Gaming

ACX 2.0

AMP editions (if colorscheme is OK)

or stirix (I have heard that asus customer service isn't the best)

[lglsg]

Thanks for your advice i just buy the msi  GTX 980 reference