You misled us.
The video card in the computer you linked isn't a video card, per se, it's onboard graphics... and it's not 1GB of GDDR5, it's GDDR3.
Because you can only get 1GB GDDR5 cards, I assumed you were talking about a desktop, and not a laptop, so I have to retract a bit of what I said.
You'll be able to play some modern games well, others you won't, and will have to play with settings on low or off... but then, it's a laptop with onboard graphics, so that was expected.