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Thread: Haswell Overclocking Guides / Results




  1. #141
    TomazzZ is offline Junior Member
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    Default Re: Haswell Overclocking Guides / Results

    Quote Originally Posted by stasio View Post
    Hi TomazzZ.......welcome to forum.

    Your GFlops in LinX is very low (should be arround 115-120).Setting is OK (no need 50 runs...20 is also OK),but which version you are running?
    Did you run on Win7 SP1?

    If you testing stability with latest AIDA64 3.00,be sure to set Preferences/General....Memory block size minimum 512MB.
    Even 1 GB is better to full stress your memory together with CPU.

    Not good setting I saw in Sin0822 Z87 OC Guide...20 runs finished in less the 5 min......proper 20 LinX runs take 1 hour+

    Prime95 27.9 needs some updates for Haswell. Normally I would trust LinX or IBT only since it tell us the GFlops which shows the efficiency and accuracy of our overclocks. Eg.(sample under water):

    4.4GHz @ 1.25v - 125 GFlops, 85C
    4.5GHz @ 1.3v - 135 GFlops, 90C

    The higher the GFlops, the more performance the overclock yield. So, 1.3v is picked as our preferred vCore.

    That was on win7 SP1 with AVX instruction AND LinX with AVX libraries build 10.3.7.

    On win7 non SP1 OR LinX non AVX, you would get:

    4.5GHz @ 1.15v - 60 GFlops, 60C

    lower GFlops and reduced performance of AVX supported apps and might sometimes get BSOD on routine works.

    Thats why I said the hotter or the more vCore needed, the more stressful the app. Also, the more vdroop (lower load vCore) the more stressful.

    Edit:
    OCCT 4.4.0 (CPU Linpack) is also OK, if you set per pic bellow:



    (untick 85C limit in setting)



    Thanks Stasio ,

    I went up to vcore 1.18 at 4.6 , linx AVX (Linpack 10.3.7.012) geting about 120 GFlops
    Temp is very high ...
    Just wondering is it normal , to have max at 92-93C under full load on air at 1.18 Vcore with average cooler like Cooler Master V6 or even for this cooler it is too high ,
    maybe 2 years old thermal paste can be an issue ?

    How hight should be the temp on average air with 1.18 4.6 under linx AVX ???


    Thanks
    Last edited by TomazzZ; 06-26-2013 at 12:25 AM.

  2. #142
    Acebmxer's Avatar
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    Default Re: Haswell Overclocking Guides / Results

    Quote Originally Posted by Acebmxer View Post
    Excellent info! The only time I have see my gigabyte board do something similar to this is when setting offset vcore. At 4.5ghz in bios with vcore set to normal and offset +0.000 I get 1.111v +075v = 1.198ish in windows at light load. Under full load vcore will jump to 1.325. I have tried dropping llc from extreme to turbo and no difference on full load vcore.




    On my z87-OC board I have never been able to get vcore to drop at idle when using fixed vcore. I have left everything on Auto, Ive tried Turbo disabled, c1e enabled, c3 enabled EIST enabled and c6/7 disabled and any other combition I have see floating around on the forms that other say worked for them but has yet to work for me.




    z87-OC only has fixed vcore and offset vcore. I have never been able to get voltage to drop at idle with fixed vcore. Offset vcore will overvolt at full load.
    Ok I stand corrected. vcore is dropping at idle, its cpuz that does not show the drop. I just verified this with a DMM.
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  3. #143
    profJim's Avatar
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    Default Re: Haswell Overclocking Guides / Results

    See if the latest beta version of HWINFO64 does a better job of showing accurate voltages.
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  4. #144
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    Default Re: Haswell Overclocking Guides / Results

    @ ace switch to power saver profile in windows,cpu-z will show correct idle clocks then
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  5. #145
    Acebmxer's Avatar
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    Default Re: Haswell Overclocking Guides / Results

    I switched to version 1.64.0 with the OC skin and that version will show vcore drop at idle.
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  6. #146
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    Default Re: Haswell Overclocking Guides / Results

    I did a web search for cpu-z 1.64.3 , dl'd it, and everything is OK on idle.
    CPU: i7 4770k at 4.3GHz Vcore=1.19v Vccin=1.8v Uncore=4GHz Vrin=1.09v
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  7. #147
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    Default Re: Haswell Overclocking Guides / Results

    how low can you go at idle?????

    Main Rig
    Gigabyte z87x-OC
    Haswell i7 4770k - 4.7Ghz @ 1.330v LLC Extreme (L310B492)
    G.Skill F3-1700CL9D-8GBXM DDR3-2133mhz 9-11-10-28 1.65v @ 2800mhz 12-14-14-35 1.7v
    Samsung Green 8GB 2x4GB MV-3V4G3D/US DDR3 1.3v 30nn @ 2200Mhz 11-11-11-32 1.60v
    Sapphire ATI HD 7970 3GB clocked 1200MHz @ 1.181v.
    HiS ATI HD 6950
    Samsung 840 Pro 256GB SSD (boot Drive) on Intel sata3 controller port0
    Corsair Force GT 120 GB Sata3 SSD on Intel sata3 controller port1
    Samsung 320GB HD322GJ 7200 RPM 16M cache on Intel sata3 controller port2
    Sony Optiarc DVD-RW AD-7240S on Intel sata3 controller port5
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  8. #148
    stasio's Avatar
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    Default Re: Haswell Overclocking Guides / Results

    Quote Originally Posted by ehume View Post
    I did a web search for cpu-z 1.64.3 , dl'd it, and everything is OK on idle.
    Web search for CPU-Z 1.64.3?
    It's already 3 weeks in my sticky here.

    Quote Originally Posted by Acebmxer View Post
    how low can you go at idle?????
    I saw very close to 0 (zero),somewhere.
    Last edited by stasio; 06-26-2013 at 01:47 PM.
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  9. #149
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    Default Re: Haswell Overclocking Guides / Results

    Yeah for some reason 1.64.3 would not show idle voltage, always fixed vcore. 1.64.0 with OC skin show me idle voltage. Some times you may have to reopen it, max 3 times (so far for me) for it to show idle voltage. Most of the time you need to leave it open for 20 sec or so before it will show idle voltage.
    Last edited by Acebmxer; 06-26-2013 at 02:30 PM.
    Main Rig
    Gigabyte z87x-OC
    Haswell i7 4770k - 4.7Ghz @ 1.330v LLC Extreme (L310B492)
    G.Skill F3-1700CL9D-8GBXM DDR3-2133mhz 9-11-10-28 1.65v @ 2800mhz 12-14-14-35 1.7v
    Samsung Green 8GB 2x4GB MV-3V4G3D/US DDR3 1.3v 30nn @ 2200Mhz 11-11-11-32 1.60v
    Sapphire ATI HD 7970 3GB clocked 1200MHz @ 1.181v.
    HiS ATI HD 6950
    Samsung 840 Pro 256GB SSD (boot Drive) on Intel sata3 controller port0
    Corsair Force GT 120 GB Sata3 SSD on Intel sata3 controller port1
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    Sony Optiarc DVD-RW AD-7240S on Intel sata3 controller port5
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  10. #150
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    Default Re: Haswell Overclocking Guides / Results

    Video of DMM vs CPU-z voltage. LLC was set to extreme.

    Main Rig
    Gigabyte z87x-OC
    Haswell i7 4770k - 4.7Ghz @ 1.330v LLC Extreme (L310B492)
    G.Skill F3-1700CL9D-8GBXM DDR3-2133mhz 9-11-10-28 1.65v @ 2800mhz 12-14-14-35 1.7v
    Samsung Green 8GB 2x4GB MV-3V4G3D/US DDR3 1.3v 30nn @ 2200Mhz 11-11-11-32 1.60v
    Sapphire ATI HD 7970 3GB clocked 1200MHz @ 1.181v.
    HiS ATI HD 6950
    Samsung 840 Pro 256GB SSD (boot Drive) on Intel sata3 controller port0
    Corsair Force GT 120 GB Sata3 SSD on Intel sata3 controller port1
    Samsung 320GB HD322GJ 7200 RPM 16M cache on Intel sata3 controller port2
    Sony Optiarc DVD-RW AD-7240S on Intel sata3 controller port5
    CORSAIR CMPSU-850TX PSU
    Swiftech MCP655-B Pump
    EK Supremacy Cpu Block
    Swiftech Mcres Micro Rev 2 Reservoir
    Black Ice GTX Xtreme 360 Radiator





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