LN2 Overclocking At Alternate – Hello 8Ghz CPU!

Tradeshow & OC events by piotke @ 2009-05-25

Last weekend Madshrimps was the main guest at Alternate; two of our experienced overclockers demoed their skills during live overclocking sessions. On Friday CPU speeds over 8Ghz were reached, on Saturday video cards were tortured. Read on to find out if world records were broken.

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Time to break some records.

In for a world record ?

On Friday and Saturday, two of Belgians' finest overclockers went to Alternate. Friday Blind represented Madshrimps, on Saturday it was Massman who did his job. Both trying their best to reach the highest frequencies and scores by pushing the hardware to the maximum.

Massman had some bad luck. The Intel E8600 setup he brought with him worked fine at 6,4 Ghz at home, but on location he got it barely stable at 6,2 Ghz. After hours of fine tuning he decided to run the system at a mere 6,1 Ghz. Using a modded Nvidia 9600 GT he as aiming to break the world record 3D mark 01 in that cards' category. He cooled the video card with LN2 which helped overclocking quite well, benching at 1050 Mhz core and 2100 Mhz Memory wasn't a problem. It were the shader clocks that were holding him back. Nevertheless he achieved a very nice score of 95150 Marks. Not the world record, but a respectable (3rd place out of 100+ scores.


Madshrimps (c)


Madshrimps (c)
Massman preparing his setup.


On Friday Blind was very close to a world record, highest CPU speed ever…

Test platform and preparation


Test Setup
CPU Intel Celeron 352 (Cedarmill core)
Mainboard Asus P5B Premium with Vcore and Vdroop mod.
Videocard XFX 8800GT
Memory 2 Gb DDR2 Geil @ 338.2 MHz (1:1) @ 4-4-4-10
Power supply OCZ 1000 watt
Other
  • Windows XP SP3 minimum Install
  • Dragon F1EE with LN2


  • On Friday he started preparing the bench table and his setup. Using gum to fill up the gaps around the socket to prevent condensation, installing the CPU and the cooling tube, he was ready to start benching. The highly rated Dragon F1 Extreme Edition LN2 Cooler made by K|ngP|n was used.

    As he is a man of little words, he didn't write a step by step guide, he just started pouring the liquid nitrogen. Some time later we heard rumors that he achieved some nice scores, but we had to wait until blind himself got home and online.

    The result

    The cpu comes with a stock frequency of 3,2 Ghz and a bus speed of 133 (533) Mhz. On air the chip did about 5,7 Ghz (+78%), on the cascade phase change cooling speeds of close to 7 Ghz(118%) were reached, but the LN2 pushed the chip over the 8 Ghz barrier. To achieve this, the CPU was fed close to 1,9 Volt. Pushing it higher wasn't possible, as the overvoltage protection wasn't bypassed yet on this motherboard. But already a high voltage, seen that the stock voltage is around 1,3 volt.

    Clock and bus speed more then doubled. Power circuits heavily tortured. LN2 quickly vaporizing. And the chip pushed to an astonishing 8116 Mhz (+153%!):

    Madshrimps (c)
    This is not a modified screenshot, proven by the Validation link.


    This result is the second highest clock speed achieved as listed by HWbot!

    Madshrimps (c)


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    Comment from piotke @ 2009/05/25
    I will post later this week some picture of the first day, seemd that there some circulating.
    Comment from Rutar @ 2009/05/25
    Shouldn't LN2 only be handled with safety gloves?
    Comment from piotke @ 2009/05/25
    Pouring LN2 over your hands does nothing. As the warmth of your skin makes a bit of LN2 evaporate, and case a fine thin gas layer beween hand and LN2. It's just when you punt your hand IN LN2 that it starts to hurt.
    Comment from Expat GriZ @ 2009/05/26
    Hey Guys, I just live around the corner from Alternate!! If I wasn't stuck offshore I would have been there. Congrats to Blind & Massman on the achievments!!
    Comment from Massman @ 2009/05/26
    Comment from Massman @ 2009/05/26
    You do know Madshrimps will be bombarded when the 8.3G result is released
    Comment from jmke @ 2009/05/26
    depends most main(er)stream sites don't rehash similar news quickly
    Comment from jmke @ 2009/05/26
    Comment from Massman @ 2009/05/26
    It's good to see them state "second highest". That means they look at Hwbot and not Ripping.
    Comment from jort @ 2009/05/26
    Jort saw that it was allright

    fun to drop by long time i saw some heavy benching

    grtz
    Comment from jmke @ 2009/05/26
    Quote:
    Originally Posted by Massman View Post
    That means they look at Hwbot and not Ripping.
    or CPu-Z
    http://valid.canardpc.com/records.php
    Comment from Massman @ 2009/05/26
    The they'd say 'third fastest'
    Comment from jmke @ 2009/05/27
    Comment from wutske @ 2009/05/28
    Quote:
    Originally Posted by jmke View Post
    Seems like they think you're trendy
    Quote:
    28.05.09, 13:32
    Guest: zukosok
    I pierdziele, guest does not use protective gloves, or tough fool?
    28.05.09, 13:45
    Guest: pf
    wow, podkrecili to 8ghz CPU with liquid nitrogen. przedatna in the super rzyciu, worthy of the media and everything, such a "trendy".
    Comment from piotke @ 2009/05/28
    I pierdziele, guest does not use protective gloves, or tough fool?
    --> I'll be damned, ...
    Comment from wutske @ 2009/05/28
    It's safer without gloves, isn't it ? Or am I wrong about that ?
    Comment from jmke @ 2009/05/28
    the same as driving faster with your car is safer
    Comment from wutske @ 2009/05/28
    Quote:
    Originally Posted by jmke View Post
    the same as driving faster with your car is safer
    actualy
    link
    Comment from blind_ripper @ 2009/05/28
    Quote:
    Originally Posted by wutske View Post
    actualy
    link
    rofl, no gloves needed for ln2 .
    Comment from jort @ 2009/05/28
    ln2 is totaly not dangerous without gloves ....
    Comment from Massman @ 2009/05/28
    Gloves prevent you from pouring with a fine touch; I'd say it's even more dangerous to use gloves than no gloves
    Comment from jmke @ 2009/05/28
    Comment from jmke @ 2009/05/29
    http://translate.google.com/translat...istory_state0=

    They think the Celeron was bought at Alternate off the shelve at random. I have a feeling this is not quite true
    Comment from Massman @ 2009/05/29
    If it only was that easy ...
    Comment from 187(V)URD@ @ 2009/06/22
    Quote:
    Originally Posted by jort View Post
    Jort saw that it was allright

    fun to drop by long time i saw some heavy benching

    grtz
    Hahaha, first thing that came to my mind was "Jort aint benching in such clothes"
    Comment from jort @ 2009/06/23
    nono aart i quit benching years ago didn't touch a motherboard the past 3 years....

    maybe in the future who knows ...

    And you ? or building a house might be a little bit more important

    grtz
    Comment from 187(V)URD@ @ 2009/06/23
    Quote:
    Originally Posted by jort View Post
    nono aart i quit benching years ago didn't touch a motherboard the past 3 years....

    maybe in the future who knows ...

    And you ? or building a house might be a little bit more important

    grtz
    Idd, no time & money.

     

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