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Thread: Haswell Overclocking Guides / Results




  1. #121
    boondocks's Avatar
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    Default Re: Haswell Overclocking Guides / Results

    Looking like all the F6 beta bios are "not so good". I'm back to F5 final.

    Here's a look at 1.64.0 G1 Killer skinned cpuz VS my DMM:
    cpuz DMM
    1.236 1.240
    1.260 1.265
    1.272 1.274
    1.284 1.288

    Not too bad.

    As for stress testing, it looks like 12K fft's in Prime 95 are proving killer to get through. I keep increasing voltage but soon I'll be at 90c on hottest core and I don't think I will go past that. Interestingly the coolest core is a good 13-14c lower....but I'm thinking this week is a good time to delid....
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  2. #122
    1000moths is offline Junior Member
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    Default Re: Haswell Overclocking Guides / Results

    Quote Originally Posted by boondocks View Post
    Looking like all the F6 beta bios are "not so good". I'm back to F5 final.
    I've found the same; i like the extra features of the F6's i.e. being able to save custom settings and have SATA drives hotswap but not marked "external", RAID performance was considerably better on them also (890mb seq-read on F5 compared to 1025 on F6J). But overall OC stability is nowhere near as good as the F5, my humble 4.5 OC was needing 1.3 to remain stable rather than the 1.18 needed on F5.

    Also finding the difference on the last core same as you also, i'm beginning to think that's more down to the shape of the IHS rather than the TIM under it so not 100% sure how well delidding will go on that front, but have ordered some LMP anyway just in case I get brave.
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  3. #123
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    Default Re: Haswell Overclocking Guides / Results

    Yeah, the IHS probably has the most to do with the disparity in core temps.
    Wish I could do 4.5 on 1.2V, or even 1.25V, but once again I did not win the cpu lotto.
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  4. #124
    1000moths is offline Junior Member
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    Default Re: Haswell Overclocking Guides / Results

    Quote Originally Posted by boondocks View Post
    Yeah, the IHS probably has the most to do with the disparity in core temps.
    Wish I could do 4.5 on 1.2V, or even 1.25V, but once again I did not win the cpu lotto.
    It's a real PITA that the chips seem to be so far apart this time around, I upgraded from a i7 920 where providing you had the D2 stepping and decent cooling 4.2 @ 1.2 was a walk in the park, that's the main reason I skipped SB and IB. To be honest the only thing that made me upgrade to Haswell was my 40th birthday and the fact I wanted a chipset that would do trim in RAID0 (and support SATA3).

    I guess I got lucky with mine as tonight I moved off adaptive voltage and stuck it at 4.7 @ 1.25 and it's been rock solid.

    The only downside i've noticed is that using static volts doesn't scale back the power use so much as adaptive. Using a 0.08 adaptive I was able to have the chip running under 10w now the lowest I get is 15w even when it's scaled right back to 800mhz. The core, VID and VRM don't want to budge from 1.25v which I thought they would if i enabled all the power saving options in the BIOS.
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  5. #125
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    Default Re: Haswell Overclocking Guides / Results

    When you say "adaptive" do you mean you are using offset? or....what?

    Also curious what kind of stability testing you are doing? I found I could not get through 15 minutes of Prime 95 AVX 12K fft's with >90% memory usage without crashing unless it was pretty rock steady.
    Could be I don't know what I'm doing yet, though, so if you want to share any settings I'll be glad to try them out.
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  6. #126
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    Default Re: Haswell Overclocking Guides / Results

    Apparently the geometry of how the cores are located on the chip causes the disparity in temps. I too am getting a lot of variance between hot and cold temps. What II find fascinating is that with my hottest core peaking at 91c, I'm feeling nothing like that in the air coming off my heatsink. It's like the IHS is a thermos bottle, holding in the heat.
    CPU: i7 4770k at 4.3GHz Vcore=1.19v Vccin=1.8v Uncore=4GHz Vrin=1.09v
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  7. #127
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    Default Re: Haswell Overclocking Guides / Results

    Can you mount your NH-D14 cooler the "wrong way" so the the cooling tubes are parallel with the long direction of the cpu die?
    It looks like your cooler's fans would need to exhaust air out toward the top of your computer case.


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  8. #128
    TomazzZ is offline Junior Member
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    Default Re: Haswell Overclocking Guides / Results

    Hello everybody and greets from Russia )

    Just wanted to ask you all about my temps on loads , is it ok , or not ...

    As far as i understand I'm pretty lucky to get stable 4.6 on vcore 1.170 ,
    but the temps on load in Lynx max 80 AIDA64 max 87 is an issue .....Just guessing can it be thermal paste or it is ok temp for air cooling , i used 2 years old Arctic cool MX-2 , that was really good on Asus p8p67 pro and i5 2500 k...
    Max tmp was 74 on 4.5GHZ and 1.3 vcore and here is just 1.17 and already 80-87 ....

    I got an average cooler Cooler Master V6

    So my question is:
    IS it ok for such a temp on load for 1.17 vcore on average air coller or 2 years old thermal paste can be an issue ?

    Waiting for your advises )
    Thanks to you all )))
    Attached Images Attached Images Haswell Overclocking Guides / Results-result-jpg 
    Last edited by TomazzZ; 06-25-2013 at 04:36 PM.

  9. #129
    1000moths is offline Junior Member
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    Default Re: Haswell Overclocking Guides / Results

    Quote Originally Posted by boondocks View Post
    When you say "adaptive" do you mean you are using offset? or....what?

    Also curious what kind of stability testing you are doing? I found I could not get through 15 minutes of Prime 95 AVX 12K fft's with >90% memory usage without crashing unless it was pretty rock steady.
    Could be I don't know what I'm doing yet, though, so if you want to share any settings I'll be glad to try them out.
    Offset yes.

    So to hit 4.5 i have EVERYTHING set to auto, Vcore to normal and an offset of 0.08v.

    That's it, no other tweaks needed.

    For stability testing I have run several hours of AIDA (which I find raises temps higher than Prime), an hour of prime 12k's, encoded 8gb of video from x264 to avi, and run continuous loops of the Grid 2 benchmark.

    The Grid 2 bench is because I found that was the only thing crashing the machine when I had the offset at 0.07v (bizarre i know).

    I'm now running at 4.7, and all i've done is change the voltage to fixed @ 1.25 rather than use and offset, all the same tests and still stable.

    Temps peaking in the 80's, and the AIDA SinMandel bench seems to get Core0 to hit 92deg.

    I am going to delid when i replace my loop at the weekend.
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  10. #130
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    Default Re: Haswell Overclocking Guides / Results

    Quote Originally Posted by boondocks View Post
    When you say "adaptive" do you mean you are using offset? or....what?

    Also curious what kind of stability testing you are doing? I found I could not get through 15 minutes of Prime 95 AVX 12K fft's with >90% memory usage without crashing unless it was pretty rock steady.
    Could be I don't know what I'm doing yet, though, so if you want to share any settings I'll be glad to try them out.
    For adaptive voltage, see:
    The Gigabyte Z87/Haswell Overclocking(OC) Guide near the bottom of post #122
    3 Step Guide to Overclock Your i7 / i5 Haswell Platform | Overclockers

    The attached picture is from the Overclockers link:
    Haswell Overclocking Guides / Results-haswell-voltage-override-modes-overclockers-com-jpg
    Q9650 @ 4.10GHz [9x456MHz]
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