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Help getting past 4GHz i7 920 D0? - Page 2

post #11 of 29
Thread Starter 
Quote:
Originally Posted by FtW 420 View Post
Depends on the memory, when the cpu is all stable you'll have to see how much/if it will overclock. I have no experience with OCZ or 1333Mhz modules, at the same frequency you can try to drop it to 8-9-8 or 8-8-8 & see how it does, if you increase the vdimm just make sure there is no more than .5V difference between the vdimm & qpi/vtt.
What is more likely to be stable? 8 9 8 or 8 8 8.
Should i set my Ram to extreme mode. Chances are the memory will be underclocked!

Quote:
Originally Posted by hfcobra View Post
my overclock settings for my computer are

cpu multi 21x
bclk 200
QPI clock at 36x (7.2)
Uncore clock 18x
RAM timings 6-8-6-24 at 1600MHz, but I have different RAM than you, so you should not use these settings
Vcore 1.3625
QPI/VTT 1.355
IOH core 1.3
RAM voltage is set to the suggested voltage in the RAM specs, 1.66 volts. (1.65 is suggested but the BIOS only allows even voltages, 0.01V will not matter and will not hurt the RAM so dont worry)

Everything else is set to whatever it is set to normally. Except for the CPU power saving options, those are all disabled except for Turbo.
Thank you very much for these settings!
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post #12 of 29
Quote:
Originally Posted by BradleyW View Post
What is more likely to be stable? 8 9 8 or 8 8 8.
Should i set my Ram to extreme mode. Chances are the memory will be underclocked!



Thank you very much for these settings!
8-9-8 will be more stable. Since you are underclocking your RAM you should try to tighten the timings on them instead of setting them to Extreme mode. try going from 8-8-8 to 8-8-7, then 8-8-7 to 8-7-7 and so on until you are no longer stable. The first number increases speed the most, but also causes the most instability, that last number is the opposite. That is why you tighten timings this way. If 7-7-7 does not work or something similar does not work like 8-8-8 then you can try 8-9-8 or 7-8-7 and see if that is stable. Those settings would be faster than moving backwards to the last stable setting which would be 8-7-7 or 9-8-8.
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post #13 of 29
Thread Starter 
Quote:
Originally Posted by hfcobra View Post
8-9-8 will be more stable. Since you are underclocking your RAM you should try to tighten the timings on them instead of setting them to Extreme mode. try going from 8-8-8 to 8-8-7, then 8-8-7 to 8-7-7 and so on until you are no longer stable. The first number increases speed the most, but also causes the most instability, that last number is the opposite. That is why you tighten timings this way. If 7-7-7 does not work or something similar does not work like 8-8-8 then you can try 8-9-8 or 7-8-7 and see if that is stable. Those settings would be faster than moving backwards to the last stable setting which would be 8-7-7 or 9-8-8.
I think i will be reading this post a lot of times before i understand it.

in the bios, in grey my timings say 777 16, but i set manual to 999 20 as written on my ram. If i leave timings on auto, will they grey writting come into action? It also runs at 1066mhz stock bios, which is wrong too.

on stock bios it runs at 777 16 1066 rather than 999 20 1333

How should i test ram? How long for? what setting?

Thank you mate
rep!
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post #14 of 29
Quote:
Originally Posted by BradleyW View Post
I think i will be reading this post a lot of times before i understand it.

in the bios, in grey my timings say 777 16, but i set manual to 999 20 as written on my ram. If i leave timings on auto, will they grey writting come into action? It also runs at 1066mhz stock bios, which is wrong too.

on stock bios it runs at 777 16 1066 rather than 999 20 1333

How should i test ram? How long for? what setting?

Thank you mate
rep!
your computer just tightened the timings automatically since the RAM was running underclocked. Use memtestx86 to test the memory and do it for about 3-5 runs.

Unless you overclock and the RAM is running at spec, then tighten the timings yourself, you can usually get better timings than the computer. Lower number is a faster timing.
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post #15 of 29
Thread Starter 
Quote:
Originally Posted by hfcobra View Post
your computer just tightened the timings automatically since the RAM was running underclocked. Use memtestx86 to test the memory and do it for about 3-5 runs.

Unless you overclock and the RAM is running at spec, then tighten the timings yourself, you can usually get better timings than the computer. Lower number is a faster timing.
Giev the evidence and inormation i have given you. If you were me right now, what exact timing would you try?

Thanks mate!
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post #16 of 29
Quote:
Originally Posted by BradleyW View Post
Giev the evidence and inormation i have given you. If you were me right now, what exact timing would you try?

Thanks mate!
if you are not overclocking then I would just let the RAM run at 1066MHz and then start from 7-7-7 and go to 7-7-6, then run memtest for 1 pass.

Then go from 7-7-6 to 7-6-6 and run memtest

then 7-6-6 to 6-6-6...run memtest

and so on until it gets unstable. When it gets unstable just go back to the last setting and run memtest for 3 to 5 passes to be sure about the stability. It must make it with NO ERRORS even 1 error means it is not stable enough.

If you get unstable when you try something with all 3 numbers the same then try the trick I said above. If 6-6-6 is unstable you should try 6-7-6 before you go back to 7-6-6. Got it? It is a little confusing but easy when you know how.

I am not entirely sure what to do about the last number though. Yours is at 16 but mine is at 24. I would say try tightening your timings with that set to 24 since it will offer a little more stability and makes almost no difference at all with the RAM speed. If someone knows more about that last number I would love to learn more about what it does and where you should leave it set to.
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post #17 of 29
my 920 is nothing amazing. but get's good clock's with fair voltage.

4.2GHZ @ 1.325 stable.

all other voltages are stock.. it was as easy as this for me.. 210X20

also my ram is at 1.64v and they only work at 9-9-9-24
    
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post #18 of 29
Thread Starter 
Because am at 1260mhz ram due to my 4GHz OC, i will start the timmings from 999 to 888 and work from there. 5 passes with memtestx86.

I will post the results!
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post #19 of 29
Why can't you do 200x21?
post #20 of 29
Thread Starter 
Quote:
Originally Posted by kiwiasian View Post
Why can't you do 200x21?
My RAM would be underclocked far too low.

@Everyone - Here are my results

8-8-8-20
8-9-8-20
9-8-8-20
9-9-8-20
9-8-9-20
7-7-7-20

All fail after 1 pass memtestx86!
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EK D5 Vario Top-X  Phobya G-Changer V2 360mm Phobya G-Changer V2 420mm Win 10 x64 Pro 
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BenQ XR3501 35" Curved Corsair Vengeance K90 Seasonic X-1250 Gold (v2) Corsair 900D 
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Logitech G400s Senn HD 598 
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