he spent more on intel so he could get proper power consumption and performance from a relevant company. For most any game besides a handful that are very CPU intensive, the processor is an afterthought anyways.
If you're really tight on budget, you can hit up fleabay and try to grab a 6870/6970 for cheap. The only difference between the 5000 and 6000 series is power consumption. 7000 series is a whole new ball game but still pricey.
Honestly, it's about expectations. I'm still using a 4870 2gb and it's fine for all but the most modern games at the highest settings. If you don't need much, you simply don't need much.