The second comparison was performed during maximum processor overclocking. This time we disabled extended processor power-saving modes in the mainboard BIOS using “C-STATE” parameter, which limited the maximum processor clock frequency multiplier setting with 22x. In this case the CPU could work at higher base clock than with 26x multiplier, which meant that we ended up with higher resulting performance although it happened at the expense of higher power consumption in idle mode.
We can see a different segregation during our performance tests during CPU and memory overclocking. Only Asus and Gigabyte boards could overclock our test CPU to 3.95 GHz. All others including Intel DP55KG stopped at 3.9 GHz. Intel DP55KG solution is very close to the leaders in 3DMark vantage and FarCry 2 tests, but the performance in these applications is mostly determined by the graphics card that is why the difference between mainboards is minimal. In most cases Intel DP55KG performance would be closer to the bottom of the list, but unlike the results in the nominal mode, its performance is not too different from that of the other competitors: there is no serious lag in any of the benchmarks.
Overall, Intel DP55KG performance in nominal mode and during CPU and memory overclocking is not surprising. In most cases it is as fast as the other boards, with very few surges and just as few drops. In fact, we didn’t expect our power consumption tests to reveal anything unusual either, but this was where the board really caught us unawares and puzzled with completely unreal results.