GPU

GTX 550 ti, it's around the top end of your budget  

Yea but I see some bad reviews about that that say radeon is better....?

What are your full system specs?(CPU,RAM,etc.)

For the price point I would say the 7770 is the better option.It's slightly faster while consuming less power.It is also highly overclockable.

7770 Review
http://www.guru3d.com/article/amd-radeon-hd-7750-and-77...

8gb of ram, amd fx-6 CPU  

Ya with a 7770 you should be able to max out all of those games with the exception of Crysis of course.

After looking around it seems the 7770 might be out of your budget.The 7750 is also a good choice.It seems the 7750 and tghe GTX550ti are neck and neck on most of the benchmarks.One thing to consider though is that the 7750 consumes half of the power of a GTX550ti.

Here's what I found...

Asus GTX550ti £80
http://www.amazon.co.uk/Asus-nVIDIA-GeForce-Graphics-Ex...

Sapphire 7750 £82
http://www.amazon.co.uk/Sapphire-Radeon-HD7750-Graphics...

Gigabyte 7770 £97
http://www.amazon.co.uk/GIGABYTE-GV-R777OC-1GD-Graphics...

Ok, I hear the the radeon 6670 and 6750 are also good, how to they compare to the 7750? Thanks  

Depending on the resolution you can get higher or lower frame rates


1920x1080:



1280x1024:


Hope that helps  

Ya it seems the 7750 is your best bet.