Wait for Ivy Bridge or Bulldozer because that AMD Phenom, is actually the same speed as your Q 6600, just at a higher clock rate (so clock for clock it's the same/similar speed)...if you can overclock your CPU (or if u already have) to 3.2GHz you already have a x4 955
😀
As for the i3-2100...I THINK it's faster than the x4 955 in gaming, but it's not worth it at this point to get the new Z68/p67 motherboards and then barely a year later buy an Ivy bridge motherboard, so yeah....
Stick with it