Like Bulldozer, this is more of a cheapo server than a gaming platform. As long as the current console generation lingers on, nobody is pushing any boundaries in terms of hardware, except for video cards. You could still be playing on an old core 2 duo and in 99% of games see no performance difference between that and one of these chips, just because well designed games use almost no cpu time and do every computation on the gpu.
Likewise, good games dont use almost any ram, because all the textures / models / etc are on the gpu. All you have on the cpu is the games internal representation of the game world and all the settings for the game to operate on.
So you dont need more than 4gb of ram, with pretty wide frequency yields, you dont need more than a dual core cpu (because all the parallel work is being done gpu side anyway) just so the OS is running on one core and the game runs uninterrupted on the other.
The bottlenecks always reduce to the gpu doing more complex rendering math and the hard drive loading textures (and with sufficient video memory, you just load every texture before you even use it and the hard drive latency becomes irrelevant except at start up of the game). So you just want an SSD for start up time and first load times and the best gpu you can get to paint sparkly lights.
So gaming platform wise, none of these recent releases mean dirt. Nothing has for a while, except graphics cards. We oversell the processor and ram and undersell the gpu - its always worth it to go from a 570 to a 580 and trade in the i7 for an i5 and the 12 gigs ram for 4 gigs. The main system really doesnt matter anymore, its that giant hunk of independent computer doing all the rendering that is important now.