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Core i7 reviews and overclocking summary


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Core i7 reviews and overclocking summary


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POSTER: computer news   ||   CORE I7 REVIEWS AND OVERCLOCKING SUMMARY

DATE:2008-11-03

This morning, as it was promised, reviewers could publish their review about core i7 (Bloomfield) processors, which are the first representatives of the new architecture nehalem.

The greatest influence on the operating speed , according to estimations are two : the integrated memory controller and SMT technology , previously known under Hyper-Threading. In order to feel its advantages , it is necessary to be limited to some applications . The new version hyper-Threading will be more effective, since the nehalem architecture is capable to reveal its advantages. : images rendering application or working with video, graphic editors - Those applications will noticeably benefit from the transfer to core i7 processors .

Games, as we already noted, only rarely demonstrate a speed increase . However, for the amateurs of multi-chip graphical solutions it will be pleasant to learn that the performance Of core i7 will not be the bottleneck of similar systems.

Core i7 processors LGA 1366 are Monolithic four core crystal , it's area is approximately 263 sq. mm, and contain approximately 731 mln. transistors. The default supply voltage is equal to 1.16 v, for memory modules Intel company recommends to not go above 1.65 v.

Now let us talk about core i7 overclocking. The majority of reviews used core i 7-965 Extreme edition, which has a free multiplier . This simplify the overclock procedure . However, many reviewers noted the importance of multiplier : the motherboard Intel DX58SO did not overclock over 160-190 MHz in the system bus. In this case Asus P6T deluxe, overclock up to 200 MHz with 1.344 v . This is completely sufficient in order to overclock (in air) the processor core i 7-920 (2.66 GHz) up to 4.0 GHz.

corei7 cpu-z

According to the observations of some reviewers, a increase in the core i7 voltage after some value do not increase the total frequency. For the majority of authors it was possible to overclock the Core i 7-965 Extreme edition to the frequencies 4.0-4.2 GHz with approximately 1.4 v . Only two processor in this case with over 1.4 v, overclock the processor to 4.23-4.26 GHz.

Now for extreme overclock. Fugger (from xtremesystem) used a gigabyte motherboard and the processor core i 7-965 Extreme edition , which was overclocked to the frequencies 5.3-5.4 GHz with 1.54-1.68 v, and Liquid nitrogen cooling .

corei7 cpu-z

In this case the memory was overclocked to the regime DDR 3-2226.

corei7 extreme cooling

We note that the technology of automatic overclock for the most loaded core : turbo boost is supported by all three processors series core i7, simply the value can be assigned by user in case of elder model with the unlocked multiplier . The other two models are satisfied by the possibility of increasing the processor frequency ( 133 or 266 MHz ). As tests showed, this technology works sufficiently effectively, increasing the system productivity in the case of nonuniform load distribution between the processor cores.

System on base of these processors is overclocked even simpler than Core 2 Quad, which requires the fine adjustments of voltage and specific parameters. At least, the overclock of Core i7 with air cooling system will be relatively simple.


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