Turbo Boost is based on the TDP limit. If your CPU is within the TDP limit set then it will Turbo Boost it. If its too close or beyond it, it wont. Prime 95 really pushes CPUs. While most high load will push a CPU, Prime 95 will push CPUs well beyon what normal laod is. I would suggest running a light game in windowed mode and see what happens rather than Prime 95.
I tried a light game, nothing. The thing just won't turbo over 3.4 GHZ. I had loaded the "optimized defaults" on my mobo, but everyone thing in the bios seems normal. Any other ideas?