What can I buy?

[MatErGodt]

I am looking for a new graphic card, but I am wondering which ones is compatible.... I have a G30AB (SOCKET 1150) motherboard, intel core i7 4770K and a gtx 760 graphic card...

 

[R_1]

The motherboard will handle just about any video card available today so you have a huge choice there.
the important variables in this equation is not the motherboard, they are the CASE and the PSU.
The limits will be the available power supply plugs and the size of the card itself, will it fit inside the case?

 

[MatErGodt]

Do u have any recommended that I should buy?

 

[R_1]

Resolution? no need getting a GTX 1080 if you are on a 1080p display. For 1080p gaming the RX480 or the GTX 1060 6GB will both do anything at that resolution.
if you are running a 1440p screen they both will offer good results but better performance can be had. for a quick round up check here. it is my go to list.
http://www.tomshardware.com/reviews/best-gpus,4380.html
HD 720p
FHD 1080p
QHD 1440p
4k 2160p