Originally Posted by Poppapete
The big problem with this board seems that you can't get the RAM to work at anywhere near 3200. I don't have a problem with that my Ripjaws - F4-2666C15Q-32GRR run at 2133 @ default settings. But they should run @ 2666 out of the box shouldn't they???!!!
I think you should get 2666, or what's printed on the package. However, if you can tighten the latencies a little bit, you'll get the same performance in most applications, often witrh lower voltages. Eg: 2400 C12 is the same as 3200 C16 (CAS ÷ frequency x 2000), or 10.0 ns delay. The higher freq/bandwidth will give you a slight performance boost with very large data transfers (i.e., benchmarks), but otherwise the performance is the same (real-world apps).
Have you tried tweaking DRAM voltage, DRAM current capability, DRAM switching freq, and DRAM power phase control? These can increase stability at higher freqs and/or tighter latencies. (DRAM clck period is best left on auto unless you're experienced with it.)
Another thing to consider is that the CPU's IMC is important here, and that comes down to the silicon lottery. To take some of the pressure off, maybe consider backing off on core freqs and cache freq just a bit and see if you can hit 2666.
But, you know, even aggressive memory overclocking is only going to yield 0.5 - 1.5 ns improvement in actual latency. You'll never notice the slightest difference; only your benchmark scores will change. Still, it's good fun