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Thread: CPU-Z WR by Xtremelabs.org maniacs. Crazy stuff inside

  1. #1
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    Talking CPU-Z WR by Xtremelabs.org maniacs. Crazy stuff inside



    Finally, after countless and tens of tried cedars I managed to get some score

    First tried some ocing of retail celery 347

    D347 lapped, then IHS-removed and polished
    Xtremelabs.org MAGNUM Legend Edition copper pot
    DFI Lanparty UT P35-T2R
    Some fast evil Nidec fans
    OCZ 1GB DRAM
    Radeon 7000 VE PCI
    ENERMAX Revolution85+ 1250W

    http://www.xdevs.com/images/ln2_cel/celrig.jpg

    For temps and voltage control measurements I've used Fluke 87V, also with scope Tektronix 2246 for PWM tweaking.

    Initial test on DFI P35 showed better results, than on usual P5B DLX, so i left DFI for rest of testing. On day before had tested celery and got 7.9G with lapped CPU.

    To get few MHz more, decided to make some insane step forward - remove IHS from CPU. As we know, all latest Intel CPU's have soldered IHS to die with indium metal. it have +170°C melting point. IHS is quite thick, near 1.5-2mm and is bit a barrier for high-end LN2 cooling, where each degree is a need. Thanks to my cpu, it have no coldbugs even with all pot full with boiling LN2.

    Removing IHS will render cpu die very sensetive to damage, and I had to manage extreme caution to put cooling flat and firmly. Die size is near 1x1 cm, not like huge i7 cores .

    But no win for those who afraid, lets forget any risks and push silicon
    Cutted resin glue between IHS and cpu package, and started heating to +170°C with thermal-controller heating gun. Minute spent.....two....nothing happens, lid don't go....added temp to 180...nothing.....190....nothing still....at +200 CPU jumps at few cm and drops it's self on floor. Whoa?

    First thought - we have another dead bug now. IHS don't go still .
    Heating again, this time fixed CPU firmly. After few secs of heating IHS drop off.



    Then cleaned up rest of indium solder on CPU with sharp blade.



    One more issue also arrive, head-less CPU lost it's ability to be cooled with stock coolers, because retention bracked is now higher that cpu die, and cooler will just lay on socket, w/o contact to CPU.

    So I opened socket and remove bracket.



    Not usual to see working system with open socket, lol

    Then time to prepared DFI mobo to go.

    Before mod tried different capacitor under subzero temp, to see which work on 77K of LN2 temp, which not. Panasonic and Sanyo OSCON SEPC work good, only dropping 10-15% of it's capacity. As many of overclockes know, Volterra VRM's don't have electrolytic caps, coz of fast switch clocks. But on extreme when every uF help to keep stability, so I've added five extra caps.

    http://www.xdevs.com/images/ln2_cel/dfimod1.jpg
    http://www.xdevs.com/images/ln2_cel/dfimod2.jpg

    After system assy spend few hours to get good settings for DFI. Those who ever oced with DFI mobos know, that there are a lot of magic bios settings, which slightly affect stability. Voltage on CPU was ramped up to maximum vid 1.6000V and offset set to +130%. This is maximum, allowed by mobo. This will result 2.12-2.15V by DMM reading on CPU caps. During boot there was quite loud swirling and whizzling sounds from DFI volterra VRM. Under this music I've started to push F7 more that human hand can survive On most interesting moments I've putted my nikon on tripod near rig to make photos every second, not to lost WR moment

    As for temps, booted straight from -170°C and under windows dropped temp to lowest -186..-190° possible. more than 2kg MAGNUM pot helped much, temps was stable and I had to put LN2 not continuosly.



    http://www.xdevs.com/images/ln2_cel/celln3.jpg

    Have validations on 8203MHz, but CPU-Z validator don't accept them, saying File ok, but corrupted .

    http://www.xdevs.com/images/ln2_cel/cel8203.jpg

    Have photos of 8237MHz, with halted CPU

    http://www.xdevs.com/images/ln2_cel/celhalt.jpg

    Good valid still a WR



    In final system started to non stable boot, sometimes loosing memory, and reporting C1 on POST led. So I stopped action and disassembled rig.

    http://www.xdevs.com/images/ln2_cel/celncd.jpg

    Not needed parts of socket

    http://www.xdevs.com/images/ln2_cel/celncf.jpg

    Thanks to whole Xtremelabs.org team for support.
    Thanks for T0lsty for LN2 supply and help with 8800GTX benchies other day.

    Russian-language report about WR here
    Taking GND reference from another galaxy

    Electronics engineering @ extreme overclocker
    LN2: Cel347@8199.5MHz,920@5300,E8600@6610,QX9650@5700,X 3050@4311,X3470@5060

  2. #2
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    Grats on the WR, way to go!

  3. #3
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    Oh man that's just nasty!
    Congrats dude, you are on fire lately

  4. #4
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    Fantastic result!! Congrats!! If nothing died maybe a second round??
    ____________________________________________

    More & more very expensive, quickly obsolete parts!!

  5. #5
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    wow congrats 8199mhz 2.096v vcore

    Good old DFI UT P35
    ---

  6. #6
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    you are a master tin...excellent work

    i'm surprised with the ut p35 board


  7. #7
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    excellent work & great CPU

  8. #8
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    TiN my man, you simply never stop! You are SO close to 8200MHz you simply HAVE to try again, for me, come on please
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    Quote Originally Posted by Jowy Atreides View Post
    Intel is about to get athlon'd
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  9. #9
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    You have definitely earned that WR m8, good job
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  10. #10
    Xtreme X.I.P.
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    whoohooo, some true old school hard core ocing
    congrats on the WR!

    more vcore didnt scale?
    do you think the chip is fried or was the board starting to act up thanks to condensation?

  11. #11
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    Sick OC! Congrats

    Quote Originally Posted by To(V)bo Co(V)bo View Post
    This is gonna be way more fun than my wifes tits.

  12. #12
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    Wow fantastic results! Congrats

  13. #13
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    Rofl, 8.2, congrats! This is really amazing, good sir!
    Donate to XS forums
    Quote Originally Posted by jayhall0315 View Post
    If you are really extreme, you never let informed facts or the scientific method hold you back from your journey to the wrong answer.

  14. #14
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    Nice WR mate!

  15. #15
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    Awesome clock !

    really nice !
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  16. #16
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    Wow, I´m really impressed with your work, hats off and congrats! I`m surprised by the mainboard choice, too. Sooo close to a non-rejected 8,200 MHz validation...

    Next step is LHe?
    The Initial value finished
    ...
    PI calculation is done!


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    Software tweaks are not for sale.

  17. #17
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    Congrats on the WR!!!!

  18. #18
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    Excellent! Very very well deserved WR.

  19. #19
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    what's the batch of that 347 ?

  20. #20
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    Very nice mods and well deserved WR

  21. #21
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    AMAZING! Awesome mods Tin
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  22. #22
    Hardware Nightmare
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    Thanks to all, friends.

    what's the batch of that 347 ?
    Who knows Lapped it first day after buy. Even nonlapped markings are almost invisible.
    Taking GND reference from another galaxy

    Electronics engineering @ extreme overclocker
    LN2: Cel347@8199.5MHz,920@5300,E8600@6610,QX9650@5700,X 3050@4311,X3470@5060

  23. #23
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    That looks like lots of fun. Way to go friend.
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    is the remedy

  24. #24
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    by far the most well earned 8+GHz and WR I have ever seen.

    Respect man
    Quote Originally Posted by Gautam View Post
    I'll add my name to this elpida graveyard as soon I even think about running 32M. (yes, the thought is enough)



  25. #25
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    That is pretty damned amazing. Congrats on WR!

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