Turbo boost shouldn't increase temps; it works by shutting down cores that aren't used and "boosting" the active ones. Basically, CPUs are designed for a certain power-envelope. Overclock a normal CPU and the consumption goes up, and temps along with it. But by shutting down unused cores, "turbo boost" keeps the CPU within it's envelope while boosting performance for apps that don't utilize all cores. (most games, for example)
That said, any improvement over the stock cooler is good.
