Results


CPU-Z: 3870MHz - 4th in the world

Let's have a look at the improvement in performance when overclocking. Below you find the bar charts to visualize the performance gain. For test details, please have a look at the screenshots under the bar charts.




Detailed results

PiFast: 25.81 - 2nd in the world	SuperPi 1M: 13.562 - 5th in the world
SuperPi 32M: 12m58.688 - 3rd in the world	Wprime 32M: 10.718 - New World Record Wprime 1024M: 340.874 - New world record

Evaluation

We came across some oddities and problems when testing. If you’re planning on buying/overclocking your Intel Quad Core, this info will come in handy:

The Intel quad cores are known to be FSB-limited around 500FSB, which was exactly what we noticed as well. Some motherboards are handling the Quad cores better than others, but 500FSB fully stable is pretty hard to accomplish. The Dfi P35 was not suited to handle +500FSB stable in despite of the extremely high voltages.

The colder the processor, the higher the FSB-wall. Our initial testing at 1,65v were bad, but when we turned the voltage down to 1,5v (which still is more than enough for 4GHz 45nm C2Q), the overclocking went better and better. With a Single Stage Phase Change Cooling, it seems that you've got to find a balance between temperature and voltage.

The memory we've used in the benchmarks, 2 * 512MB Transcand PC2-6400 was donated by Madshrimps reviewer, Gamer. These are the best kits I've worked with and only cost a mere €50. It's, in other words, not that expensive to find good overclocking memory.



I hope you enjoyed reading this OC report, until next time, click the banner below to read up on our previous overclocking endeavors: