Intel will release Extreme Edition Core i7 processor within the near future, as well known overclocker Fugger has posted some early benchmarks and overcklocking results for the Core i7 Extreme Edition 975 which comes clocked at a default speed of 3.33GHz.
Although this is hardly a huge step up from the current 965XE part which is clocked at 3.2GHz, the new 975XE seems to overclock much better. Using a Gigabyte EX58-Extreme motherboard, Fugger managed to push the new CPU to 5.26GHz without any problems and with the help of a pair of Radeon HD 4870 X2 graphics cards, him and his partner Mikeguava managed to break 47,000 in 3DMark 05 which is a new world record. Its likely that Fugger will achieve even higher scores with this CPU given time and it looks like all the overclockers out there will have a new toy to play with in due time. As there are other chips in circulation already, wed expect more benchmark results to pop up over the next few weeks.
Intel i7 975 ES D0 stepping
Gigabyte EX58-EXTREME
Gigabyte 4870X2 Quadfire (pure stock)
Corsair 1866C8 with Pelt cooling
K|ngp|n F1 EE Pot
750W Silencer PSU
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Showing posts with label Core i7 overclocked. Show all posts
Showing posts with label Core i7 overclocked. Show all posts
Intel Core i7 Overclocking Temperatures
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Core i7 Overclocking
Introduction:
It is now time for some temperature tests and to see how high these processors can be overclocked using the ASUS P6T motherboard. So it was now time to see how hot these babies got on a one hour OCCT stress test.
The bus speed is down in 2 MHz decrements with stress tests at each level and success arrived at 168 MHz. Next up was the Multiplier, which we toggled around a bit until we hit 4 GHz on the 965EE while the 920 stayed at 3360 MHz due to its multiplier limit of 20x. Increasing the voltage wasn’t doing us any good as we weren’t able to manage a stable one hour stress test. Although, higher clocks could be possible with a better cooling solution and a lot more time.
Conclusion:
From this you can say the fact that the Core i7 has started out as a good overclocker. Getting to the sweet spots wasn't really difficult and all this achieved on the stock air cooling solution provided by Intel and stock core voltages. We feel that with better cooling and a lot more time, these processors can be taken even further to new heights.
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Introduction:
It is now time for some temperature tests and to see how high these processors can be overclocked using the ASUS P6T motherboard. So it was now time to see how hot these babies got on a one hour OCCT stress test.
Intel Core i7 Overclocking Temperatures
The bus speed is down in 2 MHz decrements with stress tests at each level and success arrived at 168 MHz. Next up was the Multiplier, which we toggled around a bit until we hit 4 GHz on the 965EE while the 920 stayed at 3360 MHz due to its multiplier limit of 20x. Increasing the voltage wasn’t doing us any good as we weren’t able to manage a stable one hour stress test. Although, higher clocks could be possible with a better cooling solution and a lot more time.
Conclusion:
From this you can say the fact that the Core i7 has started out as a good overclocker. Getting to the sweet spots wasn't really difficult and all this achieved on the stock air cooling solution provided by Intel and stock core voltages. We feel that with better cooling and a lot more time, these processors can be taken even further to new heights.
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Intel Core i7 CPUs make their official debut
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Top silicon maker and breaker, Intel Corporation has now officially launched the first processors based on the Nehalem architecture. Coming to take over the high-performance desktop segment, the Core i7 CPUs make use of a new Socket - LGA1366, are paired up with a new chipset (X58) and feature a heap of more or less new features.
"Intel has delivered the fastest desktop processor on Earth to the most demanding users on Earth, the ones who are using their PCs for video, gaming and music," said Patrick Gelsinger, senior vice president and general manager of Intel's Digital Enterprise Group. "When you couple what is Intel's biggest leap in chip design with other incredible innovations like Intel's solid state drives, the Core i7 processor has redefined the computer of tomorrow."
Going from 2.66 GHz (Core i7 920), through 2.93 GHz (940) and topping 3.2 GHz (Core i7 965 Extreme Edition), the new 45nm CPUs have four cores and eight threads, integrated triple channel DDR3 memory controller, 8MB of L3 cache, a TDP of 130W and can brag with the auto OC technology called Turbo Boost. As pretty much every performance preview/review has confirmed, the Core i7s are fast as heck but to get them you'll have to dig relatively deep in your pockets as the 'cheapest' model, the Core i7 920, has a price tag of $284 while your average X58 motherboard costs even more (and we didn't include the DDR3 kit). As confirmed by Intel, the Core i7 940 is priced at $562 while the 965 EE is at $999.
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"Intel has delivered the fastest desktop processor on Earth to the most demanding users on Earth, the ones who are using their PCs for video, gaming and music," said Patrick Gelsinger, senior vice president and general manager of Intel's Digital Enterprise Group. "When you couple what is Intel's biggest leap in chip design with other incredible innovations like Intel's solid state drives, the Core i7 processor has redefined the computer of tomorrow."
Going from 2.66 GHz (Core i7 920), through 2.93 GHz (940) and topping 3.2 GHz (Core i7 965 Extreme Edition), the new 45nm CPUs have four cores and eight threads, integrated triple channel DDR3 memory controller, 8MB of L3 cache, a TDP of 130W and can brag with the auto OC technology called Turbo Boost. As pretty much every performance preview/review has confirmed, the Core i7s are fast as heck but to get them you'll have to dig relatively deep in your pockets as the 'cheapest' model, the Core i7 920, has a price tag of $284 while your average X58 motherboard costs even more (and we didn't include the DDR3 kit). As confirmed by Intel, the Core i7 940 is priced at $562 while the 965 EE is at $999.
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Intel Core i7 965 overclocking test for highest BCLK
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As Intel Core i7 uses a different architecture, the overclocking of the CPU is now largely dependent on what is known as BCLK. BCLK, which you can call it base clock determines a lot of the other settings as they operate based on a ratio to it.
So, if you overclock the BCLK to high, you might end up with a bottleneck with the QPI. For those who are familiar with AM2, QPI is similar to HT on the AM2 platform. ALthough on the AMD platform you can lower the max limit of HT so that it won't exceed a certain value. There is no such option (as yet) on Intel X58 boards for you to do that.
A ES 965 processor is tested for the max BCLK it can reach with the lowest CPU multiplier available (12x). The maximum stable BCLK that can be reached is 200MHz. (Default is 133MHz).
Here is a screen shot.
So, if you overclock the BCLK to high, you might end up with a bottleneck with the QPI. For those who are familiar with AM2, QPI is similar to HT on the AM2 platform. ALthough on the AMD platform you can lower the max limit of HT so that it won't exceed a certain value. There is no such option (as yet) on Intel X58 boards for you to do that.
A ES 965 processor is tested for the max BCLK it can reach with the lowest CPU multiplier available (12x). The maximum stable BCLK that can be reached is 200MHz. (Default is 133MHz).
Here is a screen shot.
Intel's overclocking software for Core i7
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Intel's overclocking software for intel Core i7
During the Intel Developer Forum Taipei last week, Intel demonstrated its Desktop Control Center overclocking software for the Core i7 platform. It's expected that the software will be suited for beginners, as well as die-hard overclockers.
Intels DCC overclocking software, image source: Fudzilla
The software allows you to adjust settings like the multiplier and voltage of the Core i7 processors in Windows on-the-fly, the memory frequencies, timings and several other voltages, such as the QPI voltage can also be altered in the same way. Apart from adjustments, several settings are displayed in the software.
The software would also allow the enabling/disabling of Turbo Boost (also known as Turbo Mode). This feature makes it possible to switch one ore multiple processor cores off, increasing performance by raising the clockspeeds of the active cores.
During the Intel Developer Forum Taipei last week, Intel demonstrated its Desktop Control Center overclocking software for the Core i7 platform. It's expected that the software will be suited for beginners, as well as die-hard overclockers.
Intels DCC overclocking software, image source: FudzillaThe software would also allow the enabling/disabling of Turbo Boost (also known as Turbo Mode). This feature makes it possible to switch one ore multiple processor cores off, increasing performance by raising the clockspeeds of the active cores.
Core i7 overclocked to 4.2GHz
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Because Core i7 Extreme has multiplier unlocked, so overclockers can easily OC to 4.2GHz by pulling up the multiplier. But like Phenom, the bus speed can not boost a lot. So we’d better drop our thought, they are not Core 2 anymore, so we may not have chance to see 500MHz+ bus speed.
If you read the everest benchmark chart and 3Dmark Vantage, the performance looks quite impressive.
Source: OC.com.tw
Core i7 overclocked to 4.2GHz easily
Core i7 4.2GHz 
Core i7 4.2GHz Core i7 overclock feature changed
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There’s always a demand for overclock, not only the elite overclocking community but also mobo vendors want Intel to change the plan, not limiting Core i7’s OCbility any more. So Intel changed ideas recently, going to unlock memory ratios adjustments on Core i7 940 and 920. Before September Intel want this feature only exist in Core i7-965 XE.
So what can we expect with a Core i7-940/920? Memory will not only running under 800/1066, you can tune up for higher frequency, because Core i7 940/920 now have the ability to change memory multipliers, so mobo maker can write a BIOS with option to increase memory frequency. Also, changes memory multipliers can also allows QPI speed to be changed, but documents pointed out that raise QPI speed will only gain little performance.
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