Recently, it seems like every couple of days a new CPU comes out from either AMD or Intel. But hey, no complaints here.

Of the three new CPUs, one is an enthusiast-aimed chip, the other two are extra energy efficient desktop designs.

The Phenom X3 8750 Black Edition is just like the existing 2.4GHz 8750 but... it's a Black Edition. Black Editions generally appeal more to the enthusiast crowd, as the chips have unlocked multipliers, and are generally more fun to overclock. Getting your additional Blackness will cost you a small premium over the regular trip-core 8750, but no word yet on the exact price (for any of these three CPUs.)  

The Phenom X3 8450e and 8250e are part of AMD's extra energy efficient line. The 8450e operates at 2.1 GHz, and has a thermal envelope of 65W, which is about 30W less than the non-'e' version of the Phenom 8450.  

The most original CPU of this bunch is the Phenom X3 8250e. It's an interesting chip: it will be a budget 'e' CPU, running at only 1.9GHz, with a 65W TDP. Intel has some great, inexpensive dual core processors such as the E5200 so presumably the 8250E will be go for a very reasonable price.

While I have not seen any recent figures, AMD's three core X3 line seems like it is in a better market position at the moment than it has been previously. While AMD's dual cores are pretty much always slower than Intel's dual cores running at the same clock speeds, the triple core CPUs are priced so competitively that it almost seems like your just getting a 'bonus' core, in many models.

When it comes to gaming, it still seems better to go with a faster dual core than a bit slower three core (or quad core) system, but that should slowly change as 2+ core CPUs become more prevalent in PCs all over.