Running Dx11 with FPS below 60

[Yasuhiro]

Hello, I recently decided to change to Dx 11 because I've been running with dx9 for so long and was just too lazy to try it out.

When I switched I noticed my FPS is always around 50fps and 60fps in instances unless there's some busy work going on like when spells are being cast or enemies are using their special skills. I did do the Heavensward benchmark test before it release and got 60fps even above it unless it got busy on the screen.

My friend looked at my specs and said I should be fine to run DX11 at a perfect 60fps and I really don't want to doubt their word on it but I thought I'd get some opinions on the matter.

Here's what I'm running

Operating System
Windows 7 Ultimate 64-bit
CPU
Intel Core i5 4690 @ 3.50GHz
Haswell 22nm Technology
RAM
8.00GB Dual-Channel DDR3 @ 799MHz (11-11-11-28)
Motherboard
Gigabyte Technology Co., Ltd. Z97X-UD3H-CF (SOCKET 0)
Graphics
MONITOR (1366x768@60Hz)
Intel HD Graphics 4600 (Gigabyte)
2047MB NVIDIA GeForce GTX 750 Ti (Gigabyte)

Would I need to upgrade my video card or would it be an entirely different matter?
I'm not the most tech savvy person around, so any help is appreciated