Not the best to answer this (hence why I'm scanning beginner forum), but as no one has. Everything looks good except the graphics card which is integrated with the processor. I found this doesn't work as well for gaming as it causes issues when the processor is working hard and trying to do decent graphics.
That said mine is not as good (cheaper and a year old) but I still think get a discrete graphics card.
Quick scan of ebuyer came up with the below for £630. Not sure how the processor compares and the screens smaller. Its more for comparison as it was the first on the list.
http://www.ebuyer.com/product/252804 Samsung SF310 LaptopIntel Core i5-480M 2.66GHz 4GB RAM + 320GB HDD 13.3" HD LED NVIDIA GeForce 310M Windows 7 Home Premium 64bit
Lastly without expert knowledge shopping for a discrete/integrated card is pretty hard as they are often not very clear in the description