Should I get MSI HD 7850 or Used GTX 560ti-448?

KieranDavidW123

Honorable
Apr 28, 2013
532
1
11,060
Hi.
I need to upgrade my GPU, I saw a used GTX 560ti-448: http://www.overclockers.co.uk/showproduct.php?prodid=BG-309-MS&groupid=595&catid=683
And I saw this card: http://www.overclockers.co.uk/showproduct.php?prodid=GX-191-MS&groupid=701&catid=56&subcat=411
I am unsure of what card to get, what will perform better in games like Battlefield 4, Assassins creed 4, GTA 4, Skyrim etc at near max settings. Could someone please help me!
Oh and if you see any other gpus you would like to suggest, by all means do so. my budget is 100-120 pounds. my system isn't an issue:
i3 2120 w/hyperthreading
XFX pro core edition 550w TRUE WATTAGE, has 2 6 pin PCI e connectors