Test Setup

Performance

In the first test we evaluate how these modules do at their default settings of 5-4-4-12, to establish a baseline performance value.
Next we tried to determine how the memory handled CL5, CL4 and CL3 timings, at lower memory frequencies, but the same CPU clock speed. If you compare the first four results you can see that changing memory clock, at constant CPU clock, has little effect on performance. The only exception seems to be memory running at 1:1 which seems to starve the CPU, so it has to wait for memory in situations where it could perform calculations at a faster memory speed.
The next three tests show how well the memory responds to different voltages at the CL5 setting. The frequencies shown are the maximum stable clock at this setting. As you can see the overclocks scale very nicely, the more juice you give the memory. The same is happening for the CL4 and CL3 scenarios.
I find it very important to point out that the memory can run 266 MHz @ CL3 @ 1.8V and 400 MHz @ CL4 @ 1.95V. This gives you added flexibility in situations where you can to reduce the clocks a bit but tighten the timings.

After looking through the benchmarks you can see that maximizing CPU clock is the most important factor when it comes to performance, then you should optimize memory speed.





This graph shows you at a quick glance which clock frequencies you can expect at which voltage. Please note that each individual module overclocks different, the results here can only be seen as an indicator of performance.