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Old December 26th, 2010, 07:54 PM   #16
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Location: Reading, PA USA and Athens, Greece
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ive overclocked many PC's; discovered today i have an issue with the motherboard after all. the systems were generally unstable over 3.7 on the 920's, the 950 i have run up to 4.089Ghz with no stability issues after some work. This is on different motherboards however (P55 mATX and X58 mATX).

the Asus board is going back tomorrow.
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Old December 26th, 2010, 11:33 PM   #17
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Today I've discovered the weaknesses of my specific i7-950 CPU: I could not get it to run stably above 3.8GHz without requiring a massive increase in the CPU core voltage (although 3.8GHz did require a slight bump in the CPU core voltage).

And my CPU did run hotter than it should have because my set voltages in the CPU were out of whack: By default, the CPU Load Level Calibration was set to "follow Intel's official spec" (which means a high amount of Vdroop). This setting would have required a significantly higher CPU core voltage setting than other settings, which means that the CPU would end up with too much voltage where it doesn't need it.

That said, my mid-70s temps at 3.8GHz were during the running of Prime95. But it would be considerably lower most of the time (the CPU temp was just below 40C at idle).
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Old March 2nd, 2011, 03:23 PM   #18
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Re: My thoughts on a higher-model i7

An update:

I have just recently managed to get a stable 4.01GHz out of my i7-950 without excessive overheating of the CPU. This has improved my system's overall time on the PPBM5 list - from 260 seconds to 243 seconds. Not the best performance overall for an overclocked i7-950, but quite good considering the 12GB of RAM and a less-than-optimal working disk setup (only a single two-disk RAID 0 array with 7200 rpm hard drives). Doubling that to 24GB would have improved that score noticeably (especially the MPEG score) - but I can no longer afford replacing all of that 6 x 2GB of RAM with new 6 x 4GB modules at this time.
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