GeForce GTX 480 is a high-end GFX based on the 40nm Fermi architecture. It's based on the Fermi GF100 Core and offers 480 Shader Processing Units, 60 TMUs and 48 ROPs. The central unit runs at 700MHz and the memory clock operates at 924MHz. Its gaming performance is still outstanding. GeForce GTX 480 was the fastest single GPU available until the high-end GPUs of the 500 Series were released. Most modern demanding games will run at the highest settings using a 1080p resolution. However, some will require reduced settings to be played optimally.
I'm running this card with a core i3 and to my knowledge a core 2 quad running at 3GHz comes really close to an i3, that being said my i3 does bottleneck in some games holding back this card to about 70% load. seeing as the q9300 comes in at 2.5GHz you might have a pretty bad bottleneck is certain games
around 400 $ in my country, but your cpu is going to bottlenecked this GPU. Beside, it's better to upgrade to the GTX 6xx or HD 7xxx series rather than this one. This one is 2 Gen's old and it consume much power.
if the 480 is 400$ and the 670 is 350$ and the 670 is 40% better and the 670 uses way less power, way less overheat , why would you get the 480 ? also the 650 ti boost is in the same level of performance , and its 170$ , uses way less power and less heat , man …