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Old January 3, 2012, 02:50 AM
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Default help me get to 4ghz on my C0!

I have been trying my best to learn how to overclock the past the bloomfield last few days, and I've only managed to get an overclock of 3.7ghz w/ HT stable.

No matter how much voltage I dump, it just wouldn't hit 4ghz.

Here are my current settings:

bclk 195
multi 19
QPI 3510
RAM 780 9-9-9-24 (running 6x4gb sticks)

the voltage settings right now are:

voltage 1.25v
VTT auto
LLC/no vdroop on
dram 1.654v
PLL auto


I have tried all settings from PLL to 1.88v and VTT to 1.28v and vcore at 1.3v and it still wouldn't hold 190x21.
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Old January 3, 2012, 07:38 AM
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Probably hit your limit....................
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Old January 3, 2012, 11:30 AM
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, kinda expected more from the chip. Oh well...
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Old January 3, 2012, 11:33 AM
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The DO was usually the better chip.
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Old January 19, 2012, 06:48 PM
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i have my i7 920 C0 running stable at 3.8 in a asus p6t board
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Old January 19, 2012, 07:16 PM
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have a look at this guide:
Guide to Overclocking the Core I7 920 or 930 to 4.0ghz
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Old January 19, 2012, 07:57 PM
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i had a C0 that did only 4.4 so i sold it a loooong time ago

for 4.0
cpu 1.35-1.44v
vtt 1.3-1.42v you got 6 stix
pll 1.7-1.84v
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Old January 20, 2012, 12:07 PM
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My C0 would only do 3.6ghz and even then it was flaky. Got rid of that, got a D0 and good times had by all.
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Old January 20, 2012, 01:10 PM
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Can you not hit it with a bit more vcore? The max safe vcore according to intel is 1.4 isn't it?
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Old January 21, 2012, 12:06 PM
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i tried 1.4v vcore, it the computer just shuts off and restarts 5 seconds into prime95... My psu is rated at 800w, so I assume that wouldn't be the problem.
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