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Thread: i7 Overclocking Thread Post your OverClock Results and BIOS settings here

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    Default i7 Overclocking Thread Post your OverClock Results and BIOS settings here

    i would like to start with PureOC's i7 Overclocking Thread.
    There has been reports of how easy to overclock the i7 CPUs. Lets share how far you managed to push your Core i7 920/940/965 also report your batch no# for everyone's info.

    After spending the first day mucking around with the BIOS Settings
    i managed to reach 4ghz with relative ease:

    Batch no# 3838A374
    Vcore: 1.475
    Base Clock: 200
    CPU multiplier: 20
    QPI/DRAM: Auto
    Memory Voltage: 1.65
    IOC Voltage: Auto
    IOH Voltage: Auto
    All testing done with HT (HyperThreading) Disabled
    Intel SpeedStep/Turbo Mode: On
    Spread Spectrum: Disabled

    These are the basic settings input into the Rampage II Extreme (R2E) BIOS
    and everything else was set to Auto.

    The Rampage II Extreme had a Ton of other BIOS Setting which i dont have time
    to test and try out the other combination.
    Do share with us if you managed to discover anything worthy of a mention




    I got it prime and intel burntest stable so i retained the same settings and lowered my vcore futher to 1.45





    I lowered my vcore a couple of notches further to 1.42 in an attempt to achieve the lowest possible stable vcore my i7 CPU required for 24/7 daily usage


    Last edited by bullydog; 21-01-2009 at 08:57.

  2. The following user thanks bullydog For this above post:

    Skyguy (21-01-2009)

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    With Turbo on, I don't think it stays at the 21 multiplier all the time, ya?

    I can get down to 1.35V on vCore at 4.0GHz, I'll post screenies of my BIOS settings on a P6T soon. This thread may also end up becoming a "How to overclock your Core i7" discussion. I may make a post on a very quick DIY to get to 4.0GHz easily.

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    Yeah with turbo mode it bumps the multiplier to x21 but from all my observation, CPU-z seems to be reporting on my system x21 most of the time like 90% of the time

    it backs off a little to like x20.5 sometime or x19 when your temps are closer to 80c otherwise it stays on x21 for me

    Looks like u have an excellent stepping there sky 1.35vcore on 4.0ghz is excellent
    i can boot into windows on 1.39 vcore but fails intelburn test

    what kind of load temps do u get on 4.0ghz ?

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    Depends what cooler I'm using hehe. Load temps on an Akasa Nero are 73C on air. I'm working on reviews for new i7 coolers. But my permanent solution will be a modded CoolIT Freezone TEC/Swiftech H20, so I'm betting temps will be FAR better.

    More info to follow....

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    @ Bully, it's looking good my friend
    So, tell me you two; you overclocked it to 4ghz and Tubro enable then it become 4.2Ghz right?
    However, you can't have HT enable and Tubro at the same time beacuse it very hard to get it stable right?

    Well, which one are better, with HT or Tubro?
    Hyperthreading works like 8 cores and with Tubro on, it's only 4 cores but higher Mhz.

    Have you do a comparison benchies on this yet?


    @ Sky, I'm working on the Elite review at the moment, though you like to know just incase you are not aware of .
    However, I'm not leaking any results yet but a little tip for you about modding the Freezone.

    Two things you should considering;
    1. pump flow rate
    2. coolant volume
    Those TEC won't be able to chill the coolant with high flow rate and volume.

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    Quote Originally Posted by Deton View Post
    @ Bully, it's looking good my friend
    So, tell me you two; you overclocked it to 4ghz and Tubro enable then it become 4.2Ghz right?
    However, you can't have HT enable and Tubro at the same time beacuse it very hard to get it stable right?

    Well, which one are better, with HT or Tubro?
    Hyperthreading works like 8 cores and with Tubro on, it's only 4 cores but higher Mhz.
    Thanks deton
    Yeah u are absolutely dead right about the HT and Turbo .

    I havent had the chance to test the difference between the 2 but did some very basic test with HyperThreading on IntelBurn test and OCCT, Quad Prime etc...

    HT Creates much much more heat and the 8 threads are actually each core splitting the task to 2 threads. so in another words running 8 instance of prime creates 2 times more heat than 4 instance of prime since each core now has to compute 2 instance instead of 1 instance with HT turned on.

    But i prefer to have turbo mode on ~ 4.2ghz HT feels like a gimmick to me

    @sky have u tried to have both turned on at the same time?

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    Bully, try it with HT disabled, most posts i have read, people have had better a OC with HT disabled. Your doing great! I just sent the new Thermaltake V1AX 1366 cooler to Sky for review, so he should be getting better temps, which might lead to stable OC higher that 4Ghz

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    Quote Originally Posted by Doctor_Death View Post
    Bully, try it with HT disabled, most posts i have read, people have had better a OC with HT disabled. Your doing great! I just sent the new Thermaltake V1AX 1366 cooler to Sky for review, so he should be getting better temps, which might lead to stable OC higher that 4Ghz
    We were feauring out which feature are better than the other, HT or Tubro?
    Yes, with HT enable, you won't achieve high overclock as with Turbro on, but with HT enable you will have 8 cores (simulation). IMO, if you're multi task with multi thread applications then you will benefit with HT on than with Tubro on.

    Bully said; you will get higher heat with HT enable, it's opposite with the Tubro on.

    I doubt the V1AX will be handle overclocked i7 over 4Ghz. Seriously, what air cooler can handle over 200w heat load?

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    Most companies have unofficially confirmed that their coolers (with 1366 brackets) will offer "moderately good" cooling performance on the i7, nowhere near as good as we've had cooling for Socket 775.

    While a good air cooler will let you hit 4.0GHz on an i7, 24/7 operation is not recommended, particularly if you are doing CPU intensive tasks.

    Realistically, to run 4.0GHz 24/7, you need water cooling or TEC, or a combination.

    I now have a Rampage II, I'll soon have it set up and doing testing, I'll see how it compares to the P6T Deluxe for settings and overclocking. A full review will then be coming.

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    Yeah have to agree HT turned off is the way to go with overclock i7

    I'm seriously not sure how air cooling does it at 4.0ghz 24/7 all day?
    maybe their ambient temps are always 20c or less? If that's the case
    then summer will be a real test for those Air Cooled i7 on 4.0ghz
    I'm summer all Year round so mine should perform even better
    if i bring my system over to a really chilly place

    But no doubt there are some really really good chips i've seen doing 4.0ghz with like only 1.2++ or lower 1.3++vcore ...
    maybe skyguy can comment on that again with his review (dont forget to post your ambient temps with your review )

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    Bully, that's why I suggested turning HT off, what are the day time temps there ? I did get Jake a few more coolers to review, so hopefully they will be here in a few weeks. From what I can tell it looks like water cooling is the way to go with a core i7.

    I will try to get a Vigor Monsoon 3 Lite TEC / Air cooler and see how that compares, but to be truly honest, it looks like the CoolIt Domino ALC is the best cooler for your money. Lets face it, if it can keep a 965 Extreme around 50c @ 4GHz for $70 it's the cooler to buy.

    If you guys think I should send the Domino to Jake to use in the LGA 1366 round up, now is time to say something. This way I can ship everything together, in our Domino review, it was not tested with a core i7, so maybe we should retest it ?

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    I don't think it is fair for air coolers to put the Domino into this comparison.
    Liquid cooling still superior than air cooler no matter how compact it is.

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    Deton, I was going by the price range, a lot of people buy air coolers because they cannot afford water cooling, or figure it's to much trouble to set up and maintain. The price of the Domino ALC and seeing as it is a sealed unit changes that for a lot of people.

    There is still a lot of people that have not heard about the Domino, and like I mentioned, it was not tested here on a core i7, and now we have the chance to do that. It does not have to be included in the round up, but we will retest it with a 920 at 4Ghz and see what kind of temps and cooling performance the Domino offers.

    By the way, according to the Bloodrage hardware monitor program, my NB is at a steady 36c and my 965 extreme at 21c with the Elite on high setting, but I am not using the same software controled module, I use a manual module with a low,med, and high setting.

    This now tells me that if the Bios hardware monitor program is correct the Boreas, should give me temps somewhere around 12c, which would allow for some insane overclocks. Now I know I made a mistake not buying the large mountain mods case, I could have had everything installed by now.

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    Yes, Domino fits into the price range but it has thermal dissipation advantage over air cooler. Air cooler dissipate heat by the fan and if you have poor ambient temp, no matter how big the copper or aluminum heatsinks it only can move so much heat.

    With liquid cooling, the radiator alone can bring the coolant temp down to 5-10 degrees above the ambient temp and the fan will aid to bring down another 1-2 degree.

    My big wild guess for the Domino with the i7 @ 4.ghz is around late 60ish or above on load.

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    Okay, so here's my question then:
    With the 775's, having all of the RAM slots populated would bring your max OC down. Now that the MCH is on the processor, will that still be a factor and if so, will it just be a heat issue?
    I already have a water setup (I'll need a new block of course) but my w/c is crazy efficient, currently on a Q6600@ 3.44 it'll show 60C running Prime for 2 hours so if it's just a temp issue I'm set. I run a number of VMs (sometimes as many as 5 at a time) so 6x2GB isn't just for bragging rights.

    EDIT-FWIW my i7 rig isn't built yet, looking at a MSI X58 Platinum and i7 920
    Last edited by zeno0771; 24-01-2009 at 03:24.

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    Quote Originally Posted by zeno0771 View Post
    Okay, so here's my question then:
    With the 775's, having all of the RAM slots populated would bring your max OC down. Now that the MCH is on the processor, will that still be a factor and if so, will it just be a heat issue?
    I already have a water setup (I'll need a new block of course) but my w/c is crazy efficient, currently on a Q6600@ 3.44 it'll show 60C running Prime for 2 hours so if it's just a temp issue I'm set. I run a number of VMs (sometimes as many as 5 at a time) so 6x2GB isn't just for bragging rights.

    EDIT-FWIW my i7 rig isn't built yet, looking at a MSI X58 Platinum and i7 920
    good question.
    I don't think most of our i7 owners use 6 slots at the moment due to the triple channel memory cost.

    I'm sure the CPU will be hotter if you used up all 6 dimms. I don't mean to put you WC system down but 3.4ghz at 60c is not that great and if you use this system on i7 it will be close to 70c, of course it depends on the overclocked CPU.

    Bullydog, can you tell him your temps?

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