Yeah, looks like CoreTemp failed to pick up the proper sensors. You can remove from your computer if you want. HWMonitor you can keep, since it has other useful information, but like with my APU, the temperature sensor reading for the CPU Core is bogus, so don't pay attention to it.
Judging from the temperature spread, I would say that AMD Overdrive is your tool of choice for CPU Core temperatures. (Also, according to your current temperatures, you did not leave Prime95 running while taking the screenshot. 😛 ) 33C seems a bit low, especially for the stock cooler, but I don't know your ambient temperatures, If you want a better idea of what your CPU Core temperatures will actually be while gaming, and whatnot, leave the logging...