You are right about your PSU, by any standards that is woefully small. So an upgrade there first I think.
Is your card a low profile type or can your case take a full size card?
An HD 5770 about £120 or 4890 about £150 might be worth a look.
This thread is now locked and can not be replied to.
Sniper Elite 4 review: Headshotting Nazis has never felt so good
1995-2015: How technology has changed the world in 20 years
The Best Design, Illustration, Animation and VFX Awards of 2017
WWDC 2017 dates: How to get WWDC 2017 tickets, when is WWDC 2017 and more details announced