Real benchmark?

HI, i was looking at some benchmark video

and this dude got 20-30FPS one GTA V out of a

Core 2 duo e4300 1.8Ghz

2GB DDR2 ram

GT730 2GB

Windows 8.1

What?

But i have pretty similar specs

MY specs:

Core 2 duo e4400 2.0Ghz

4GB DDR2 ram

GT730 2GB

Windows 8.1

Can i get 20-30 FPS?