Also Guild Wars 2 is heavily CPU bound and your core2quad is getting older by the minute, if you check out this: 

http://www.tomshardware.com/reviews/guild-wars-2-performance-benchmark,3268.html 

Here you will see that the game really taxes the CPU just as much if not more than the GPU.

[QUOTE="die3"]

it's not a regular 4870, it's the X2 version. Which according to the makers of GW2 would be able to easily max the game (coming from the blog post they released on performance).

DABhand

This. The HD 4870x2 is slower than a 128-bit HD 7750 that uses a fraction of power yet performs better in most games. The HD4870 X2 is very much obsolete by todays standards.