Asus 32" LED @ 2560x1440 but can't get above 60Hz?

[WVRICK]

I just got a new Asus 32" PB328Q monitor and I read the spec say it was a 75Hz refresh rate but it defaults to 59Hz and max at 60Hz. I want to run 75 so is there anything I can do? All drivers are up to date. My video and CPU is:
Intel i7
NVIDIA GeForce GTX 760 3 GB GDDR5 (OEM)
So shouldn't the video card be enough to drive the display?

If not what would be a good gaming monitor 27" or larger?

 

[popatim]

You seemed to have missed the footnote on page 3-10 of your manual

*Supported for the following graphic cards when the input source is DisplayPort: AMD R9 295X2,
AMD R9 290, AMD R9 285, AMD R9 270X, AMD R7 260X, AMD R7 250, AMD HD 7990 , AMD HD
7970, AMD HD 7850, AMD HD 7790, AMD HD 7770, AMD HD 6990, NVIDIA GTX 980, NVIDIA GTX
960, NVIDIA GTX TITAN Z, NVIDIA GTX 780, NVIDIA GTX 770, NVIDIA GTX 750 Ti, NVIDIA GTX 750,
NVIDIA GTX 690, NVIDIA GTX 680, NVIDIA GTX 770, Intel HD Graphics 4400, Intel HD Graphics 4600.

 

[WVRICK]

I'll go to asus and download the manual, it never came with the moitor... just a welcome to vip group and pictorial for the different connections.

 

[WVRICK]

Thank you for the answer, I now have 75Hz. I went back and checked the box for the manual and there was none, guess someone missed packing it or maybe its automated. I downloaded the manual and was had tried both VGA and HDMI but not DisplayPort but as you said DisplayPort is the only was to achieve 75Hz.