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Thread: Overclocking study - 4790K & Pentium G3258 - air, water, phase-change & LN2

  1. #1
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    Overclocking study - 4790K & Pentium G3258 - air, water, phase-change & LN2

    Did you ever wanted to see a full overclocking study, starting from air cooling and going through the most important stages? Well then, this study is for you!. From normal ambient air-cooling to low ambient air-cooling, from All-In-One water cooling solutions to extreme water cooling, from Single Stage phase change cooling to Dry Ice, and finally all the way to Liquid Nitrogen - we have tested all!

    Bonus - there is beer involved in the form of a beer cooled PC

    Bonus 2 - there is also a very nice EK Water Blocks Giveaway involved !!!

    Overclocking study ? Intel Core i7 4790K & Intel Pentium G3258 ? air, water, phase-change, DICE & LN2 @ LAB501.net (English)



    Last edited by Monstru; 07-13-2014 at 10:35 AM.
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    DAS BOOOOOOOOOT!!!

    I do like those air numbers; they're basically just as good as the water and frankly hitting anything over 5ghz would finally create a worthwhile upgrade over Sandybridge. Ivy/Haswell may offer IPC improvements, but once you factor in the SBs overclocking advantage it usually worked out to $300 for a few percentage points at best.
    Quote Originally Posted by Hans de Vries View Post

    JF-AMD posting: IPC increases!!!!!!! How many times did I tell you!!!

    terrace215 post: IPC decreases, The more I post the more it decreases.
    terrace215 post: IPC decreases, The more I post the more it decreases.
    terrace215 post: IPC decreases, The more I post the more it decreases.
    .....}
    until (interrupt by Movieman)


    Regards, Hans

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  4. #4
    Xtreme Mentor stasio's Avatar
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    Why TjMax in RealTemp......sometime 100 and 105C ?
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    TJMax for G3258 is 100, TJMax for 4790K is 105...
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  6. #6
    Xtreme Mentor stasio's Avatar
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    I looking elswhere TJMax for 4790K is 100.

    Edit:
    Developer of RealTemp......unclewebb
    I think the default TJ Max is 100C for your 4790K. The Log word for the center 2 cores in one of your screen shots means your CPU reached the Thermal Throttling temperature during one of your tests and this has been logged by your CPU. When the CPU hits this temp, it will start to rapidly throttle the multiplier to keep the core temp from exceeding the maximum safe operating temperature. You need to keep it under this temperature. When stress testing, if you see Log, you should either improve your cooling or back your overclock off a little.
    http://www.overclockers.com/forums/s...d.php?t=748309
    Last edited by stasio; 07-14-2014 at 03:46 AM.
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  7. #7
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    Then there must be some problem with this version of RealTemp. However, we got past 100 oC and the CPU didn't throttle...
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    lol... I got 100C at one core only with IB, in OCCT
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    Xtreme Mentor stasio's Avatar
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    Haswell has TjMax 100C (Sandy 98C, Ivy 105C)....
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    As I said, there are two options - either Intel moved TjMax at 105 for Devil's Canyon, either that version of RT does not read correctly.
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  11. #11
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    Thanks a lot Monstru and Matose

    Nice beer experimentation too

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    If you use RealTemp on different processors, TJ Max will not be automatically updated. You need to either delete the RealTemp.INI configuration file when you swap processors or go into the RealTemp - Settings window and push the Defaults button so RealTemp can read the correct TJ Max value from your CPU. RealTemp 3.70 or RealTemp T|I Edition should be able to read the correct TJ Max value when you do this.

    RealTemp T|I Edition
    https://www.sendspace.com/file/55yvry

    TJ Max is 100C on the 4790K screenshots that I have seen so far. The new 4th Gen Pentium is probably the same.

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    Nice testing. But the retail 4790Ks do not measure up to the ES 4790Ks. Not many 4790K retails can even run 4.9ghz 4/8 cpu stress tests, let alone 5.0Ghz. And that's even pushing vCore to 1.50 and vRong to 2.25.

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    ugh, only 4500mhz 1.22v max loaded to keep from throttling on high end air.
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    Xtreme Mentor stasio's Avatar
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    Quote Originally Posted by Monstru View Post
    TJMax for G3258 is 100, TJMax for 4790K is 105...
    Testing done in XP (both CPU)........TJMax is 105
    Testing done in Win7 (both CPU)........TJMax is 100
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  16. #16
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    Quote Originally Posted by unclewebb View Post
    If you use RealTemp on different processors, TJ Max will not be automatically updated. You need to either delete the RealTemp.INI configuration file when you swap processors or go into the RealTemp - Settings window and push the Defaults button so RealTemp can read the correct TJ Max value from your CPU. RealTemp 3.70 or RealTemp T|I Edition should be able to read the correct TJ Max value when you do this.

    RealTemp T|I Edition
    https://www.sendspace.com/file/55yvry

    TJ Max is 100C on the 4790K screenshots that I have seen so far. The new 4th Gen Pentium is probably the same.
    Didn't know that Kevin



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    The key to any Haswell chip is to fix intel's mistake and remove the gap between the processor core and the IHS. My i5-4670k was hitting over 90'c @ 4ghz as it came from intel. Removing the IHS, then lapping it's underside lip so it sits much lower, but not so low that the lip no longer makes contact. Then add a slathering of Coolaboratories Liquid Metal on the CPU core itself, set chip into motherboard socket, followed by putting a few dabs of "household goop" rubber adhesive on the lip you just shaved (hehe), set it into the socket, and clamp the chip and IHS together with the lever. After a few hours, give the IHS a coating of the same liquid metal and mount your cooler.

    My chip is now at 4.4ghz and maxes out at around 63'c. Right now it's idling at 31'c. Oh... my cooler is an old Thermalright Venemous X that I slightly altered to make it fit properly on my LGA1150 motherboard. I am NOT using the RT version designed for my board. My cooler says it's only compatible with Socket 1366/1155/775
    Socket AM2/AM3/FM1

    It does sit a little too close to my RAM but i made things fit.

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    Quote Originally Posted by AliG View Post
    DAS BOOOOOOOOOT!!!

    I do like those air numbers; they're basically just as good as the water and frankly hitting anything over 5ghz would finally create a worthwhile upgrade over Sandybridge. Ivy/Haswell may offer IPC improvements, but once you factor in the SBs overclocking advantage it usually worked out to $300 for a few percentage points at best.
    Not even close. According to the results AIR (extreme and standard) is either flat out better or flat out worse than water. In the case it is flat out better the comparison was made with the Enermax Liqtech 120X which is weak for an AIO and notoriously not worth the money you pay for it.

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    Not many AIO's out there can match the old NH-D14...
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