DDR3 2200(O.C)/1333 Question

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short answer no, but you may have depending on that fsb/qpi you will be running.

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It means the mobo can support DDR3 frequencies upto 2200MHz.
You can either overclock slower RAM sticks or use ones that run at a max speed of 2200.

If you buy a stick that can run at higher speed, mobo will only transfer data at 2200.

If you buy a slower stick, it will run at that frequency.

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No, you can almost certainly set higher, with the right BCLK and memory multiplier. It's just that higher speeds aren't guaranteed to work (though they may), no matter the quality of the other components.

Alright dude,

When it says a board supports up to 2200MHz RAM, it says it can support that CYCLING FREQUENCY. (Since Hertz is the unit for frequency)

Now.
You may overclock your RAM, but you can only overclock it so much.
The other alternative is to BUY faster RAM, this can get very expensive.

For example,

RAM @ 2000MHz speed

RAM @ 1600MHz

As you can see they cost differently, and if you look closer, you can see something like 8-8-8-24, which are the latencies, which can also push your price way up.

So you see, people can indeed overclock RAM, but many choose to buy very fast RAM and under clock it slightly, preserving the latency, of course thats a preference.

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If you want to learn a little about RAM i suggest you go to Anandtech they have a very useful guide to understanding RAM.

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I'm not sure, but something along those lines, or it may not recognize it at all....

Either way, the more the overclock, the easier it becomes when you have faster RAM.
Ergo,

2000MHz RAM is easier (you may achieve stability faster) than a 1333Mhz RAM.
As is said earlier, your RAM gets a little under clocked when you overclock off the bat. Of course you may tune it later so your RAM can overclock too.

Most of todays boards support up to 2000MHz RAM so youre fine, High end boards like the Rampage III Extreme supports up to 2200.