Many MMOs are mainly CPU intensive rather than GPU intensive, so what you need depends on your uses and budget. I'd be happy to help you if you told me your budget and what games you'd be playing.
Thanks for the response! For the cost of the entire rig, I'm prepared to spend around 1.5k for a system that will last me at least ten years. I've been told that life expectancy is not unreasonable, provided regular mantainence is performed. Bells and whistles (theater lighting and such) don't really appeal to me. I'm looking to spend the majority of that money on graphics, processing, and memory hardware, along with an efficient cooling/air filtration system that will keep the rig chugging on for the long haul. I play a pretty wide variety of games, including Battlefield 3, Civilization 5, Hitman: Absolution, and World of Warcraft. However, it was the minimum system requirements of Elder Scrolls Online that got me thinking my laptop and its Intel i7 Q840 1.87gHz CPU might be holding me back from fully exploiting the latest generation of games. Currently, I am able to run all of the previously mentioned titles without issue, provided I keep the graphics settings at medium or low.
Well, for 1.5k you can play just about any game you want on ultra. 10 years of that is highly unreasonable, though. If you look up Moore's law, it states that the number of transistors on integrated circuits doubles every two years. This is slowing down due to the limits of silicon, but in 10 years, there will be huge changes, and a 1.5k build today will not be worth anywhere near that. It may run games then, but not well. As for lasting that long, you cannot guarantee it will last that long. But that doesn't matter, because you cannot future proof that much, so I'll help you with the best build you can get today. http://pcpartpicker.com/p/36BXv
This has an amazing processor, it will last you a long time. Normally I would suggest an i5 4670k, but the 4770k will offer some longevity. It has a 1tb harddrive, and a quality SSD for a quick boot and all that. It has one of the most powerful GPUs available today, a nice motherboard, and a closed loop cooler so you can overclock. It also has a nice, high quality case for lower temperatures and nice looks. The power supply is a high quality 80+ gold, which means it is efficient and will last you a while.