Can't get past BCLK 176 overclocking I7-860

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Jerizo

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Sep 6, 2013
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Hey everyone I'm currently adjusting the overclock of my I7-860 and I just can't get a stable oc past a BCLK of 176. Increasing Core voltage doesn't seem to provide more stability anymore and my temps are peaking 65.

I have a feeling I'm missing something because the my temps and available core frequency make it seem that I should be able to get a better oc out of this but I keep getting bluescreens at 176+ BCLK.

I tried 178 @ 1.36v or 180 @ 1.4v but none of those worked.

I also noticed that my pc makes a high pitch rough scratchy type of noise when enabling Load-Line-Calibration. I tried it to decrease vdroop therefore being able to take advantage of extra Core Voltage but It didn't help.


These are my current settings/ specs:

Gigabyte p55-ud3
Intel I7-860
2x2GB A-Data 1333 CL9 + 2x4GB Mushkin 1600 CL7 = 12GB 1333 CL9 Memory

Multiplier 21x
BCLK 176
Core Voltage ~1.33v
Memory Voltage 1.5v
Memory Frequency ~1050

I use Prime-95 for stressing the CPU and Realtemp/ CPU-Z for monitoring.


How do I get a better oc out of this?

Also could I decrease the multiplier and increase BCLK to better match my memory frequency to what they are rated at?
 
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chrisso

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Nov 17, 2013
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The RAM divider has to set so the memory runs in its accepted parameters. Mixed up ram makes AND sets is a no no. Different size sticks is a no no, as is speeds. Getting the clock you have is just 'lucky';
dont push it,eh?
 
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P

Pinhedd

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Aug 7, 2007
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The Base Clock wasn't designed to be moved around much. It drives a lot of devices so cranking it up too high is just a recipe for problems. If you want to overclock, get a platform that's designed for overclocking.
 
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J

Jerizo

Honorable
Sep 6, 2013
27
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10,530
To be clear I adjusted the higher performance memory's frequency/ timings to match the lower performance one so they are exactly the same.

I wasn't aware that mixing different sizes mattered, neither that it would make a difference what the memory modules are rated at as long as they match and are within specs. Does this really factor in in a noticeable way?
I never had any problems with it. I have another kit of Mushkin 1600 CL7 memory ordered though. The timings mismatch slightly but i should be fine if I match them up to the looser timings right?

I researched before touching my oc and people seem to be using up to 180-200 base clocks up to 1.4v core frequency at temps up to 80°C for up to 4ghz+ OCs.
Topping out at 176 base clock 1.33v core frequency and 65°C @ 3.7ghz seemed a bit low.
 
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