rd600 overclock review

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POSTER: computer news   ||   RD600 OVERCLOCK REVIEW	DATE:2006-12-25
At the beginning of this month Singapore associates reported that the increase in the mysterious voltage GTL reference voltage is capable of favorably influencing the overclocking potential of four core processors kentsfield. Naturally, similar statements was introduced by someone with confusion: really between the related processors conroe and Kentsfield there is so large difference that some secondary voltage can have an essential effect on the overclocking potential? Meanwhile for long time ago is known that the processors kentsfield more badly overclock on the system bus, and now this problem is not so obvious, since the sole representative of this core relates to the family core 2 Extreme, and has free multiplier. However, already during January will appear the processor core 2 Quad q6600 (2.4 GHz) with the fixed multiplier (9x), more lately will be released the processor core 2 Quad q6400 (2.13 GHz) and to overclock them it will be possible only with the system bus, and the methods of improvement in the overclocking potential of motherboard is the task for the owners of such processors with the multiplier of 8x. Today appeared the survey of motherboard DFI LAN party UT ICFX3200-T2R/G, based on the chipset ATI RD600. In the course of tests of this motherboard by associate they focused special attention on the influence of the parameter GTL reference voltage to the result of overclock for processors conroe and Kentsfield. We will start from the explanations relative to nature of the parameter GTL reference voltage. Associates explain, that this signal voltage of system system bus, which is been the derived form of the voltage CPU VTT. The latter, is used for the overclocking of processor and the power of chains buffers input-output. In any case, this determination are from documentation on the module of control voltage (VRM) for motherboard with the support of contemporary processors intel. Colleagues experimentally explained that the parameter GTL reference voltage has an effect on the overclock of processors conroe and Kentsfield as follows: with the value of this volatge to 0.95 v the processors conroe are overclocked to 400-500 MHz system bus, For the processors kentsfield it is necessary to increase this volatge to 0.97 v to get the system bus frequency 350 MHz, and to 1.1 v for the frequency of system bus 400 MHz. In any case, these regularities are valid for motherboard on the base of chipset RD600. Motherboard DFI on the base chipset RD600 proposes the widest collection of tuning, connected with the volatge. On screen shoot above associate showed those values, which allowed them to maximally overclock this processors. For example, dual core processor core 2 Extreme x6800 (2.93 GHz) was overclocked to the frequency of system bus 495 MHz. The voltage GTL reference voltage in BIOS of this motherboard was set with the numbers from 0 to 255, in this case this parameter was equal to 140. So the overclock to 386 MHz on the system bus for processor core 2 Extreme QX6700 (2.66 GHz) required to increase the value of this parameter to 190. It is necessary to say, this is the highest overclock of processor kentsfield on the system bus, the chipset intel p965 has better result. For example, are known the cases of overclock kentsfield to 500 MHz on the system bus. At the given moment the chipset intel p965 he is record holder on the possibility of overclocking processors core 2 Duo and Core 2 Quad with the increase in the frequency of system bus. Associates prove that the increase in the stress GTL reference voltage in a number of cases makes possible to improve the overclock of processors kentsfield on the system bus - in this experiment increase in the frequency of system bus was  by 36 MHz in comparison with the default setting. It is important to note that excessive increase in the stress GTL reference voltage do not bring any benefit , and it is necessary to select optimum operating range. With the overclock of processors conroe to change the voltage GTL reference voltage, as it guided, there is no need. Related Products :

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