As I feared my advice wasn't understood. Here's the thing. Assuming you are using a 1080 monitor, you've already got something that can run just about everything out there. GPU wise that is. The issue I think he'll find is that when using the GTX670 or SLI'd 560s, he isn't going to get the frame rates he thinks he will. And no amount of swearing at me will change that. I understand budget issues, but from what I've seen a 2120 or 2400 will outperform any BD CPU in games. I'm NOT saying BD is bad or shouldn't be used. If you do any of the tasks they are good at then you should get one. But they aren't good gaming CPUs. Sorry.
Using the link that was provided, check out the gaming benchmarks.
http://www.tomshardware.com/reviews/fx-overclock-crossfire-ssd,3098-10.html
Crysis, 1080, no AA, even OC'd it can't break 50FPS, let alone 60. And that's only high settings. Where is the stock Intel CPU? (seeing as you can't OC the 2120/2400) 66FPS. I know that's the 2500, but I'd bet the 2400 can get close to that. Just cause 2? Again, even OC'd it can't hit 60. The other rig can hit 86FPS. Again, the 2400 should be close to that.
Go ahead and look around. Even OC'd BD CPUs can't reach what a stock clocked 2120/2400 can do. If its only been 6 days, try to return the AMD stuff and switch. You don't need to spring for the 2500, 2600, or even the new 3xxx CPUs. The 2120/2400 should be more then enough to handle modern gaming. Rate me down if you makes you feel better, but you asked for upgrading advice. You can put all the GPU power you want in that rig. BD is simply going to hold you back.
If it makes you feel better, I know what BD is good for. Media converting.
http://www.tomshardware.com/reviews/fx-overclock-crossfire-ssd,3098-8.html
And its cheaper too. But with the info provided a gaming rig shouldn't have a BD as its heart. I'm not trying to be mean, but things are what they are.