The easy answer is no, overclock the cpu as far as possible and as rolli mentioned try to unlock the last core. What motherboard do you have ?
I can't unlock the last core as the system would not boot, but I have my CPU overclocked to 3.4ghz right now. My motherboard is the Asus Sabertooth 990FX. I got this motherboard because I was originally planning on getting the 6 or 8 core bulldozer CPUS, but read a lot of comments about how phenom II is much better than them.
My GPU is the 5850 1gb. I plan on waiting for AMD 7000 or nvidia 600 series cards for a few months before upgrading this part.