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Last week by official Intel authorization in the network appeared surveys of processor Core 2 extreme QX6700 (2.66 GHz), written on the regulated Intel scenario. we can not say that the "tester" somehow influence the test result, but here there was not even a screen shot of this processor . Exception became only the test from the known Singapore site with the fresh Kentsfield engineering model . Specifically, then we learned, that those extended in the days IDF Fall 2006 processors were based on new stepping, designated by number "7". the degree of overclocking in air is about 3.73 GHz witch is better than the old stepping .
Today was published a more complete survey version with the participation of Kentsfield processor with new fresh stepping.
Strictly speaking, we already known the overclocking result - witch was the frequency of 3.7 GHz using the stock air cooler. Today associates got better result, whereas for that achievement the core voltage was raised to 1.45 V. the Box cooler was replaced by Scythe Ninja using slow fan Noctua diameter 120 mm, then under these conditions it was possible get as high as 3.916 GHz.
we sould note that the system was not stable at this frequency, but the system bus overclocking limit with Kentsfield- is 356 MHz. Such number look small for processors Core 2 Duo , but for the four core processors Core 2 quad it can become the limit. As it is known, processors Kentsfield heat high system bus frequency. Fortunately, model Core 2 extreme QX6700 can be overclocked by increasing the multiplier. In any case, increase in the frequency by 30% without any efforts - is a good result from the four core intel processor.
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