Today we are using the Asus Rampage IV Extreme motherboard, one of the best motherboards you can currently buy, regardless of price. We know the Rampage IV Extreme will let the memory reach the limit without a problem.
The memory was immediately detected and correctly configured by the Asus motherboard with timings of 11-11-11-28 @ 1T.
The memory is configured to 1.35 volts at the automatic settings. Ideal for a low powered media server or similar.
System validation at default clock speeds is available here.
Finding the limits of this memory was interesting. it posted at 2,133mhz without a hitch for us, maintaining the same timings and a 1.5 voltage setting. At 2,400mhz we increased the voltage to 1.65v and set the timings to 11-12-12-40 @ 2T.
Even though the system was completely stable at 2,400 at 11-12-12, it failed validation, as shown above. It was perfectly stable however. We have however seen CPUz fail verification on some systems, even at default clock speeds.
We then increased the voltage to 1.69 to see if we could push it any further. At 2,666mhz the memory timings needed to be dropped to 13-13-13 which resulted in a degradation of performance. Any tighter than this and stability was compromised. We achieved a post at almost 2,800mhz however the timings were 14-14-14 (1.72v) which didn't translate to fantastic ‘real world' performance results.
We backed down to 2,400mhz and dropped the timings to 11-11-11 and the system posted fine.
We didn't expect to get complete validation after it failed at 12-12-12, however as before, we ran Memtest+ for several hours and the system passed @ 2400mhz 11-11-11.
I am sure you will agree that these are rather incredible results!