You can try it, it is not guaranteed to work which is why that is not what it is spec'd for. IN that lottery, some do better than others. All you can do is get the best memory you can find and try it, if it does't work you'd just have to settle for the same performance as everyone else, which by the way, is what you should be doing anyhow because nobody actually needs to push it every single build to get some trivial small increase. Being technologically fit means being able to use existing tech, not always thinking "what if it were a tiny bit faster". By that I mean a year or two from now the difference would be boring and applications are designed to run on contemporary hardware, not just tommorrow's hardware.
That's not meant to be an insult, I'm just recounting years of experience overclocking including tweaking the memory, that it's an interesting thing to do at first but in the larger picture only the overclock that is cheap and easy is worth the bother. That just means don't worry about the little things, you can still get a good o'c even if you can't hit some number you presently think is important with the memory timings.