The Core i5-2410m is a dual core CPU with Hyper Threading so it is not a true quad core CPU. The stock speed is 2.3GHz, but with Turbo Boost on one core it can reach 2.9GHz. It has the Intel HD 3000 integrated graphic core which is equivalent to a desktop Radeon HD 5450 graphic card, but does not support DX11; only DX10.
The A4-3300m is a dual core CPU with a stock speed of 1.9GHz and up to 2.5GHz using TurboCore with one core. The integrated Radeon HD 6480G is close to the performance of a desktop Radeon HD 5550.
While the clock speed between the two CPUs are fairly close, Intel's CPUs are in fact more powerful because of the CPU's architecture design. Thus if both CPUs had the exact same clock speed, the Intel CPU would be more powerful. Intel "Sandy Bridge" CPUs are basically about 20% more powerful than AMD's Llano CPUs so you would need a Llano CPU @ 2.4GHz to equal a Sandy Bridge CPU @ 2.0GHz.
On the flip side, AMD's integrated graphic core is more powerful than Intel's Sandy Bridge CPUs, plus they support DX11. Like I stated above, the Radeon HD 6480G is the more powerful integrated graphics core. Being almost comparable to a desktop Radeon HD 5550, it's performance is nothing to write home about. But in a laptop environment with a low screen resolution the Radeon HD 6480G does give pretty decent performance especially at it's low price point.
If the laptop you are buying does not have a dedicated graphic card then go with a Llano laptop. But if the laptop has a dedicated graphic card, then choose whichever laptop has the more powerful one.
For a non-gaming notebook missing DX11 support would not be a drawback.
AMD positions it's APUs as competition for Intel CPUs
A8 APU against Core i5 CPU
A6 APU against Core i3 CPU
A4 APU against Pentium SB dual core and below
In general, APUs trade lower CPU performance for better GPU performance and a lower price point.
Graphics are not so important.
i3-350m will have 6370 (it's the hp g42-450sv).
My wonder is if i3-350m is as decent cpu as like i3-2310m.
I understand that i5 is stronger cpu, but if i3-350m is just a step below then i'll go for it.