I5 750 RAM Speed - 1600 or 2000?

There's only a roughly $15 dollar difference between 4gb of 1600 and 4gb of 2000, but will the i5 even notice the difference?

Motherboard: http://www.newegg.com/Product/Prod [...] -_-Product

Memory is the last piece of my build, so once this question is answered I'll place the order

Ok, so for the 1600s if the three sets say 9-9-9-24, 8-8-8-24, and 7-7-7-24 - the CAS 7 set will be the best?

Here are the 1600 sets I'm looking at:
http://www.newegg.com/Product/Prod [...] 6820231279

And the 2000 set:
http://www.newegg.com/Product/Prod [...] 6820231281

I've assembled three i5's in the workshop and have tested 1333 9-9-9-24 and 1600 8-8-8-24 memory clocking the i5 from 133 to 210MHz. I'm not seeing any noticable difference in the 3DMark06 and PCMark05 results based on memory speed or timings.

No doubt the memory only benchmarks will show an increase, but how much of this translates back to your applications is unknown (until you run the tests).

Maybe the 7-7-7-24 will give you some performance benefit in and of themselves, but more likely it will help provide a higher stable overclockl, rather than a better preformance result at a lesser overclock.

There's no performance downside in buying the quicker, only possible upside, and just a bit more money.

Memory is always the last place to look for performance benefits, but one of the first places to look for stability in an overclocked system (after cpu).