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post #7011 of 10702
With four sticks of RAM (2 2x2GB kits) rated at 1.5V 1600MHz CAS6 (G, Skill Ripjaws X) each, do I need to run them at higher DIMM voltage than rated? Definitely I can't run them at their rated CAS6 voltage since the system won't boot but running them at CAS9, 1600MHz, and 1.5V DIMM voltage makes the system boot and pass Memtest without any problems. Will it affect CPU overclocking when running them at stock voltage?
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post #7012 of 10702
Quote:
Originally Posted by nismofreak View Post

In the middle of another run.
I was getting BSOD 101 error messages a lot when I went to 5GHz. I kept on cranking the vcore and nothing changed.
[*snip*]
I'll post my official numbers and my BIOS screens once done in 4.5 hours. If you look at my sig, my stage III is what I am running on right now. thumb.gif
cheers.gif

Here are my settings from lastnight's successful 5 GHz run. I hope this helps some folks:
450

The Core Current Limit is 200
450

450

450

450

Love overclocking this chip! Anyway, back to work.
Edited by nismofreak - 1/30/12 at 6:18am
post #7013 of 10702
Quote:
Originally Posted by nismofreak View Post

Here are my settings from lastnight's successful 5 GHz run. I hope this helps some folks: Warning: Spoiler! (Click to show)
450
The Core Current Limit is 200
450
450
450
Love overclocking this chip! Anyway, back to work.

Why you got speedstep disabled?
post #7014 of 10702
Quote:
Originally Posted by eGGe View Post

Why you got speedstep disabled?

I don't need speedstep since the chip is overclocked. I just disabled it as a matter of completeness. I started my process with it off so I am not sure if would have destabilized my system or not.

What really stabilized my system was increasing both VTT and VCCSA voltages by one step.
post #7015 of 10702
Quote:
Originally Posted by nismofreak View Post

I don't need speedstep since the chip is overclocked. I just disabled it as a matter of completeness. I started my process with it off so I am not sure if would have destabilized my system or not.
What really stabilized my system was increasing both VTT and VCCSA voltages by one step.

I think disabling speedstep sort of makes offset overclocking pointless. When you offset overclock the advantage is the processor downvolts when it steps down in speed
    
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post #7016 of 10702
Quote:
Originally Posted by scorpiontsi View Post

I think disabling speedstep sort of makes offset overclocking pointless. When you offset overclock the advantage is the processor downvolts when it steps down in speed

Well, that makes sense what you are stating but then explain this:
404

468

The above reason is why I disabled it. I still get lower voltage numbers when the CPU is not under load. Am I missing something?
post #7017 of 10702
No I may be wrong ... Maybe its one of the Cstates that allows the chip to throttle and not speedstep. Does your board have epu software? With my epu software I can keep my cpu from downlocking or downvolting ect
    
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post #7018 of 10702
Quote:
Originally Posted by nismofreak View Post

Well, that makes sense what you are stating but then explain this:
404
468
The above reason is why I disabled it. I still get lower voltage numbers when the CPU is not under load. Am I missing something?

That's weird because if your CPU downlocks to 1600MHz then Speedstep is working.
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post #7019 of 10702
Quote:
Originally Posted by nismofreak View Post

The above reason is why I disabled it. I still get lower voltage numbers when the CPU is not under load. Am I missing something?

You just proved that the speedstep option in your bios has no effect. as i dont think C1E is capable of dropping it down quite that far. I think using offset voltage might be overriding the speedstep disable option. Offset based voltage is using the speedstep lookup tables to derive your voltages. Easy way for you to check if C1E is dropping it down, You can check it out if it intrigues you enough.

C1E in its original implementation was for dropping the 3.6/3.8 ghz prescott's down to i think 2.8 ghz(?) and dropping the voltage by ~.2 volts. I always had it disabled so i dont remember exact numbers. It used to do it by dropping the multiplier and nicking at the bus clock speed if i recall correctly but its pretty obvious thats not the case for sandy bridge as the base clock stays static
Quote:
Originally Posted by kevindd992002 View Post

With four sticks of RAM (2 2x2GB kits) rated at 1.5V 1600MHz CAS6 (G, Skill Ripjaws X) each, do I need to run them at higher DIMM voltage than rated? Definitely I can't run them at their rated CAS6 voltage since the system won't boot but running them at CAS9, 1600MHz, and 1.5V DIMM voltage makes the system boot and pass Memtest without any problems. Will it affect CPU overclocking when running them at stock voltage?

I had the same issue with my 4x4GB modules, 1.2v vccio didnt work, but im just finishing my last three hours of my 12 hour stability test at 1.55v, even tho they work fine as any two pairs of sticks at 1.506v in bios and no sign of voltage sag. Memory controller gets hungry i guess? after stability is confirmed im screenshotting the heck out of my bios and keeping the settings for records, and im going to start dropping vccio, and then pll voltages and then maybe seeing if i can back away on dimm or cpu voltage after im done... ill post a submission in 3 more hours fingers crossed thumb.gif
Edited by ryuji - 1/30/12 at 7:18am
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post #7020 of 10702
Quote:
Originally Posted by ryuji View Post

I had the same issue with my 4x4GB modules, 1.2v vccio didnt work, but im just finishing my last three hours of my 12 hour stability test at 1.55v, even tho they work fine as any two pairs of sticks at 1.506v in bios and no sign of voltage sag. Memory controller gets hungry i guess? after stability is confirmed im screenshotting the heck out of my bios and keeping the settings for records, and im going to start dropping vccio, and then pll voltages and then maybe seeing if i can back away on dimm or cpu voltage after im done... ill post a submission in 3 more hours fingers crossed thumb.gif

I just need to confirm, what are your voltages now while stress testing? VCCIO, VDIMM, and PLL. Sorry, I don't seem to understand some parts of your answer above.

Well, mine passed Memtest for around 24 hours at 1.5V. Does that mean I do not have to worry?
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