For gaming, it's just not necessary. I don't think that there are any games even out right now that would require more than 4GB, so 8 GB ensures you have enough for the game, your OS, and really most other multitasking scenarios. The only time that you would really need to consider something above would be if you are doing intense graphics rendering like AutoCad, or video editing, but not gaming. Plus if for some unlikely reason, a game came out in the near future that did have a higher requirement, ram's cheap enough that it would be a quick and easy upgrade.