I'm afraid it wouldn't be a good buy, along with most pre built systems.

Dead socket.
Weak CPU.
Weak graphics card.
16GB of ram(unnecessary for gaming)

I'd suggest building your own desktop which is very easy, just takes a little research.
It is kind of like solving a jigsaw puzzle when building it as components and cables can only fit into one place.

People on the site would be able to help out, along with some great video tutorials on how to build a gaming PC on YouTube. Also the manuals that come with the components are very easy to follow.

By building the system you know exactly what's going into it(most prebuilts cheap out on crappy quality components).
You will also have the knowledge to in the future easily upgrade the PC.
Also get better bang for buck.

If you decide to go ahead and build yourself a PC then go over to the PC Building section and request a build.

Before you do take a look at the link below.

Forums/t=6751631/pc-building-rule...dvice.html

In other words, when you make a topic put the following

What is your budget and currency? (Pound sign does not work normally, use GBP abbreviation)
Do you need a monitor?
Do you need a keyboard?
Do you need a mouse?
Do you need an operating system?
What will you use the PC for?

Never waste your money on a pre-built PC. build it. much cheaper and there are plenty of people here that will help you.