Vulpesveritas, on 16 June 2012 - 11:39 PM, said:
Ok, man. We seem to not understand each other. I'll try to put things simple.
AM3 is mostly EOL(450/645/945 etc.). With few exception and low supply.
AM3+ is FX series. They are not EOL, but not a good GAMING product. High heat, mostly low performance.
FM1 are A4, A6, A8. Crappy performance with an exception of 3850/3870.
Compatibility:
You can use AM3+ CPU on SOME AM3 boards, but you'll loose in performance. There is no point in upgrading say 945 to 8120. You'll get much better bargain on 1090. In money, heat and performance.
Right now, I would not recommend anyone to buy AM3+ system from scratch(aside some very specific WORKING rigs).
If you have AM3 board and, let's say, 245 CPU – 965 or 1090 would be a good upgrade choice. IF you can buy them.
If you thinking of buying a new rig from scratch AMD is not an option for gaming. Upcoming trinity CPU are FM2 socket based and are NOT compatible with FM1, let alone AM3. Performance wise(compared to FM1), a good integrated GPU boost, but VERY low CPU boost. I would not recommend AMD integrated GPU for gaming. It's a very very good thing for laptop. And if you are using PC for casual stuff(surfing, video, simple games). If you play some good stuff on high resolution, discrete GPU is a MUST.