Intel Core i7 2600k with Asus P8P67 Deluxe

Hello. Last year I remember people suggested to turn C1E and Intel Speed Step off, to have a stable overclocking. However with Sandy Bridge I see people raising the offset and reaching speeds up to 5.0Ghz

My questions are
1) what is the max temperature that this CPU should reach? 85C just as the 1366 and 1156 socket chips?

2) What is the max Vcore that is recommended for 24/7?

Right now I have my CPU running at 4.8Ghz, and the Vcore is 1.416V

I remember with the Intel Core i7 920 the max suggested Vcore for 24/7 was 1.3625

These chips are 32mm, so maybe they can tolerate a little bit more


So far my overclocking is

4806Mhz = 102.3Mhz x 47
Vcore = 1.416V
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  1. Well, since Intel only gives thermal spec on their spec sheet and nothing about voltage, your guess is as good as mine. I would download the data sheet to see what it has to say.

    http://ark.intel.com/Product.aspx?id=52214
  2. Yeah it says nothing about voltage

    Right now I'm running at 1.40V
  3. there are numbers all over the place right now. Some sites are saying don't go over 1.38, other forums are saying intel datasheets have a cap of 1.52.

    Out of curiosity, did you adjust anything to your dram voltage? what about the Asus DIGI+VRM settings?
  4. Debeucci said:
    there are numbers all over the place right now. Some sites are saying don't go over 1.38, other forums are saying intel datasheets have a cap of 1.52.

    Out of curiosity, did you adjust anything to your dram voltage? what about the Asus DIGI+VRM settings?


    I hae no idea what DIGI and VRM are

    I am running at 1.40V
    I disabled C1E and Intel Speed Step

    I will try to go down to 1.39V, and I will stop when the system becomes unstable

    I've seen some guys running with multipliers of 50 and the Vcore runs as high as 1.48V or 1.50V, that's way too much for my taste
  5. DIGI and VRM are all your asus mobo power controllers and what not. TBH, i'm not sure if they do anything. At least, it hasn't made any difference ot me when i did adjust them.

    Did you stress test it? Every time I push past 4.5, I fail prime95. But then, I haven't pushed my voltage past 1.35. Maybe I'll give it a shot.
  6. I have read that when ocing sandy bridge you have to ensure you are are allowing the CPU the power it needs, and I dont mean voltages here. I mean there are settings to reduce the power draw of the CPU to save on power. So in this case, dont you have to disable DIGI and VRM to ensure the maximum available power is sent to the CPU?

    This is just a wild guess.
  7. RJR said:
    Well, since Intel only gives thermal spec on their spec sheet and nothing about voltage, your guess is as good as mine. I would download the data sheet to see what it has to say.

    http://ark.intel.com/Product.aspx?id=52214

    In the datasheet(p78), it states the VID range is 0.25V~1.50V.
  8. What I've read, don't take it above 1.35 for the time being!!!
  9. don't go over 1.35 on Vcore and never over 1.9 on PLL or you could kill your cpu.
    on your memorys, don't go past 1.65 because over that could also kill your cpu.
    these sandy cpu's have a much thinner layer and they can´t handle that much voltage.

    be very carefull, and have fun overclocking.
  10. Can anyone give me their overclock settings for my system with a Intel Core i7 2600k with Asus P8P67 Deluxe and 16 megs of kingston extream 1333 ram in a Azza hurrican case with a Noctua NH-D14 cooler
  11. This is what I've got
    BCLK Freq 100MHz
    CPU Volt 1.155
    DRR Volt 1.5
    VCCSA Volt .92500
    VCCIO Volt 1.05000
    CPU PLL Volt 1.80000
    PCH Volt 1.05
    CHA/B Data/CTRL .500
    CPU ratio 4.3

    Runs all day every day rainbow table generating @ 69C Tops.

    For Hardware
    i7 2600k D2
    Swiftech APOGEE-XT
    Otherwise the 120mm radiator and res/pump combo are from an older (like 4 years old) kit

    If i step it up to 4.4 it chokes so the CPU volt needs to be upped I believe. Any suggestions? I don't want it over 72 C.
  12. Please see below image of my cpu burn it test. Are these results acceptable or should I crank down the overclock?



    The system:

    ASUS P8Z68 DELUXE/GEN3 LGA 1155 Intel Z68 SATA 6Gb/s USB 3.0 ATX Intel Motherboard with UEFI BIOS
    Intel® Z68 chipset:
    1 x SATA 6Gb/s port, gray: SSD (AHCI/RAID)
    Crucial M4 CT128M4SSD2 2.5" 128GB SATA III MLC Internal Solid State Drive (SSD)
    1 x SATA 3Gb/s port, blue: HDD1 RAID 0 array (AHCI)
    1 x SATA 3Gb/s port, blue: HDD2 RAID 0 array (AHCI)
    Marvell® PCIe 9128 controller :
    1 x SATA 6Gb/s port(s), navy blue: optical drive
    WIN7 64 ULT and games on 120 GB Crucial M4 SSD
    WD Caviar Black 1TB x2 RAID 0
    Chenbro Gaming Bomb II case
    Zotac ZT-50104-10P GeForce GTX 580 3 GB
    G.SKILL Ripjaws X Series 16GB (4 x 4GB) DDR3 1866 (PC3 14900)
    Intel i7-2600K Sandy Bridge 3.4GHz (3.8GHz Turbo Boost, overclocked to 4.6GHz)
    Corsair H50 CPU Water Cooler with dual push/pull fans
    ASUS VG236H 23-Inch 120 Hz 3D Ready Panel Monitor/nVidia 3D Vision Kit
    Samsung 42" Multisystem TV LCD
    Thermaltake Black Widow 850W PSU
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