1. #1

    Overclocking i5-3570k

    Hey,

    So anyway I decided to start attempting to overclock my i5 this evening after reading around over the past week or so about the best way of going about things. Atm I've currently got it running at 4.4 GHz at 1.224V, with the temperatures sitting around 66-70 degrees C using the FFT torture test on prime 95. I did try 4.5GHz but just couldn't get it stable, with prime95 crashing so I decided to tune it down a bit. My pc specs are in my sig, I was just wondering if any of you experienced overclockers have any advice/tips to help me achieve the most stable overclock.

    Any help would be appreciated,

    Cheers
    CPU: i5 3570k @ 4.3GHz | GPU: MSI GTX 660TI Power Edition | RAM: Corsair Vengeance LP 1600 MHz | Case: CM Storm Enforcer | Motherboard: Asus P8Z77-V LX | CPU Cooler: CM Hyper 212 Evo | SSD: Samsung 840 120GB | HDD: Western Digital Caviar Green 1TB PSU: CM GX 650W Bronze Soundcard: Asus Xonar Essence STX

    Armory: http://eu.battle.net/wow/en/characte.../Zazu/advanced

  2. #2
    Take a look at: http://www.overclock.net/t/1291703/i...s-motherboards

    I've never overclocked with an ASUS board, but I use the guide for ASRock boards on overclock.net and I've gotten stable on my 2500K all the way to 5.0GHz with it, good stuff!

  3. #3
    Thanks for the link, I'll definitely take a more in depth look at it tomorrow. I've just tried lowering the voltage down to 1.23 in the bios but I got a BSOD after about 3 mins of running prime. Back up to 1.24V in the BIOS (although CPU-Z only says 1.224V?) and its been running at the same temps as mentioned above (65-70 across the 4 cores) for about 10 minutes so far. Don't have time to do a longer stress test tonight as I've gotta be up tomorrow but would be nice if someone could comment on 4.4GHz at 1.24(1.224?) being a decent overclock?

    EDIT: When I stop running prime CPU-Z shows the voltage to be 1.248. Why does it lower to 1.224 when I actually run the stress test? Might be a stupid question but being new I'm still feeling my way around these things haha.
    Last edited by Big Zazu; 2013-01-05 at 12:30 AM.
    CPU: i5 3570k @ 4.3GHz | GPU: MSI GTX 660TI Power Edition | RAM: Corsair Vengeance LP 1600 MHz | Case: CM Storm Enforcer | Motherboard: Asus P8Z77-V LX | CPU Cooler: CM Hyper 212 Evo | SSD: Samsung 840 120GB | HDD: Western Digital Caviar Green 1TB PSU: CM GX 650W Bronze Soundcard: Asus Xonar Essence STX

    Armory: http://eu.battle.net/wow/en/characte.../Zazu/advanced

  4. #4
    Scarab Lord Xuvial's Avatar
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    Quote Originally Posted by Appled View Post
    EDIT: When I stop running prime CPU-Z shows the voltage to be 1.248. Why does it lower to 1.224 when I actually run the stress test? Might be a stupid question but being new I'm still feeling my way around these things haha.
    Load Line Calibration (LLC). When the chip switches from idle to running, there is a drop in the amount of voltage supplied to the chip. LLC tries to compensate by throwing in a little extra votlage to keep it steady, but quite often it overcompensates a bit and pushes the voltage higher during idles.

    Best advice is to keep LLC values low-medium (but don't turn it off), Asus boards give a range of LLC options. If you've already done that then don't worry about it the small voltage fluctuations between idle/load states.

  5. #5
    Thanks for the reply. I've been playing around with the LLC settings a bit and I've got a few questions about it. The guide I was using (Republic of Gamers guide) said to start of on extreme/high LLC at 1.25V just to check that the chip could run 4.5/4.4, and then steadily lower it down from there. When running prime last night on 1.23V @ medium LLC it didn't seem very stable, although I'm going to try the same thing again and see what happens.

    Don't know if I've misunderstood this but as you said " keep LLC values low-medium ", if I leave it on medium for example, should I just increase the CPU voltage to increase stability and just not touch the LLC?

    Hopefully that makes sense haha, cheers.
    CPU: i5 3570k @ 4.3GHz | GPU: MSI GTX 660TI Power Edition | RAM: Corsair Vengeance LP 1600 MHz | Case: CM Storm Enforcer | Motherboard: Asus P8Z77-V LX | CPU Cooler: CM Hyper 212 Evo | SSD: Samsung 840 120GB | HDD: Western Digital Caviar Green 1TB PSU: CM GX 650W Bronze Soundcard: Asus Xonar Essence STX

    Armory: http://eu.battle.net/wow/en/characte.../Zazu/advanced

  6. #6
    So I think I've got it stable at 4.3 Ghz @ 1.23v. Anyone else with an i5-3570K who I could compare that to?
    CPU: i5 3570k @ 4.3GHz | GPU: MSI GTX 660TI Power Edition | RAM: Corsair Vengeance LP 1600 MHz | Case: CM Storm Enforcer | Motherboard: Asus P8Z77-V LX | CPU Cooler: CM Hyper 212 Evo | SSD: Samsung 840 120GB | HDD: Western Digital Caviar Green 1TB PSU: CM GX 650W Bronze Soundcard: Asus Xonar Essence STX

    Armory: http://eu.battle.net/wow/en/characte.../Zazu/advanced

  7. #7
    To get the most precise Vcore (LLC) just use Ultra high on the LLC.

  8. #8
    http://www.youtube.com/watch?annotat...&v=668ATnnBOZU

    This is what i watched to learn how to overclock mine, He gets his i5-3570k to 4.5k but i personally wouldnt recommend that high, mines at 4.2 and i sit under 40C while doing everything i need to do, But i also dont have a stock CPU fan

    Oh ya and in the video (I think its that one) he gives links that are really helpful, Ones a stress test, Ones a Temp Monitor, and Others information on CPU like voltage, Speed its set at and such to make sure settings are correct.

    So check that in the info
    Last edited by zhodor; 2013-01-08 at 05:17 AM.

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