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P4 2.80GHz Overclocked to 3.917GHz
vwbus writes "The guys at Muropaketti have taken a brand new Pentium 4 2.80GHz chip, bought a pint or so of liquid nitrogen and overclocked it to an astounding 3.917GHz. The Finns describe how they put together the system on their web page, and luckily there are a whole set of pictures which demonstrate exactly what they've done, so you don't need to understand Finnish to figure it out. The pictures show wisps of nitrogen evaporating from the jar sitting on top of the CPU, and they publish some SiSoft figures to demonstrate the kind of speeds they attained."
The folks at Muropaketti have had a lot of practice with this cooling method.
Why not just keep the processor outside :-)
;) (or at least shit on it).
Cuz the bears would eat it
fucktard is a tenderhearted description
I don't know about liquid nitrogen, but you can pick up a pint of ben & jerry's anywhere... much tastier.
Don't try this at home. If you feel tempted, watch three times in a row "Terminator 2", and remember you are not made of liquid quicksilver, or whatever.
Rome taught me patience and assiduous application to detail. Virtues which temper the boldness of great, general views.
person 1: "I just got this brand new P4 2.8GHz CPU. What should I do with it?"
person 2: "Get a Radeon 9700 and get on top of the 3Dmark2001 benchmark list at Mad Onion?"
person 1: "Radeon hasn't come in yet..."
person 2: "Compile some software?"
person 1: "Already did that."
person 2: "Create a new anthropomorphic CGI character with a Jamaican accent?"
person 1: "Tried it, but for some reason the CGI software refuses to let me. Something about digital rights management and George Lucas."
person 2: "Rip some DVDs to DIVX?"
person 1: "Already did that. I think it's what pissed off George Lucas."
person 2: "Ah hell, lets just dump some liquid nitrogen on it and overclock it. It'll be like the Fast and The Furious if it blows up."
person 1: "Duuuuude! Great idea!"
At this point they are only extreme cooling the CPU. Some of the "coolness" will also cool the MB a bit.
At what point will it be "necessary" to dip the total package of MB, memory, GPU and CPU in the nitrogen?
I mean, you would want to increase FSB and memory timings as well if you want to get half-decent Quake3 fps's scores.
Why are other peoples sig's always more witty ???
The coolest gas you could get normally would be liquid Helium, at about five degrees above absolute zero. Believe me, it's not easy to work with in the lab (and if you think waving a vacuum cleaner around is the way to reduce surface pressure, you shouldn't go anywhere near it).
The pictures show wisps of nitrogen evaporating from the jar sitting on top of the CPU
You can't see the evaporating nitrogen. The wisps are droplets of water condensed from water vapor in the air by the low temperature.
Stop worrying about the risks of nuclear power and start worrying about the risks of not using nuclear power.
1972: Typist's Elbow
1982: Space Invaders Wrist
1992: Carpal Tunnel Syndrome
2002: Your entire hand shatters after being frozen in liquid nitrogen.
If you've seen this article before: yes, I know. Some people haven't. This is for them. Thanks.
(this is not a
In university, we got an old huge VAX which we had to run with open windows, but after a while they told us to stop. Not because of the immense power drain, but because the palm trees were starting to push out the birch, fur and pine trees in the local forests and they were concerned that tigers were next. This was in northern Sweden, BTW. You Americans can probably relate to Minnesota, if it helps.
Money for nothing, pix for free
Oh great, then intel would trademark Intel Outside as well...
We have modified TurboPLL-module on Asus P4T533-C motherboard which allows us to use higher front side bus.
Thanks to this module, when we set 145MHz from BIOS, the FSB is actually 186MHz.
You can check out the pictures of modified motherboard here.
By the way, no one has made mention of the price of such a setup. OK they had 15 minutes of excitment for the price of a _really_ expensive CPU, custom motherboard, not to mention the nitrogen-cooling gear, the voltmeters and other lab equipment they use.
For the moment I'll stick to that 1.5Ghz processor which barely produces any heat & is so damn quiet:)
CPU still works fine and actually we are already planning for the next test with liquid nitrogen
Earlier we tested Pentium 4 2,4GHz CPU with liquid nitrogen over 20 times and it's still kicking
We dry the components very carefully after the test with compressor.
Thank god, in linux/arch/i386/time.c an unsigned long is used to measure KHz's.
I would think that this is best done in a well ventilated area.
;-)
A relatively small jar of liquid N2 evaporated and warmed up to room temperature in a short time can replace many liters of air by pure N2. Trying to breathe the stuff won't cause a drowning or suffocating feeling or even a smell, as the air we breathe normally contains 70% of it.
The first symptoms of suffocation by lack of O2 in the air (rather than lack of air) are some kind of euphoric feeling and wooziness, so you wouldn't necessarily start thinking of finding a way to reduce the effect.
I bet that euphoric feeling is just what they experienced when they saw it working
See this this link for full instructions and pictures.
Take the cheese to sickbay, the doctor should see it as soon as possible - B'Elanna Torres, "Learning Curve"
I had a professor who told us of a practical joke he'd do every few years. He was fond of explosions and other cool things liquid oxygen and nitrogen being no exception.
Appearently he used to fill on of the fingers in a latex glove with hamburger, then put his hands in the glove. Careful to conceal his deception, he would stick stick his false finger into a some liquid nitrogen, while telling the class about how if one just left a finger in there it would shatter if struck. He then proceeded to demonstrate this by smashing the false and frozen finger with a hammer.
The way he tells the story, he was forced to discontinue this irregular practice when a bit of frozen hamburger hit a girl in the front row, causing her to faint.
And a styrofoam cup with a piece of what appears to be copper pipe, held together with duct tape and dreams, while it might be cool, doesn't rise to what I would consider "gear".
--Jimmy has fancy plans; and pants to match.
Now it can wait on the hard drive faster.
If you aren't part of the solution, there is good money to be made prolonging the problem
But really, what a waste of electricity, heat, and what a noise pollution. I'm waiting for desktop CPUs with SpeedStep which clock down to 100 MHz when you're doing vi editing and go up to 2.8 GHz, turning on all fans, when you compile software or transcode video streams.
I hope there will be enough consumer demand for such CPUs, pushing AMD/Intel towards saner technology.
gopher://cramer.plaintext.cc http://cramer.plaintext.cc:70
is not ten liters. Ten liters is ~20 pints.
You work for Nasa?
I guess P4s really DO make the Internet go faster!
I did a quick translation from Finnish of the Muropaketti article:
There are probably more than enough articles about the Intel Pentium 4 2.8 GHz, so standing out from the crowd with some LN2 overclocking tests is a good thing.
For the tests, we ordered 10 litres of liquid nitrogen from Porin Hitsauslaite Oy and Messer (well known for [his|its] good service) supplied a 20 litre tank at the same price.
As a test bed, an Asus P4T533-C with an i850E chipset (which had been found to be satisfactory) was used. Samsung PC800 RDRAM modules were used for memory. The motherboard had TurboPLL, Vcore and Vmem modifications, which are better documented here.
This was the first LN2 test with this processor, so we started off by trying to get a feel for how the CPU behaves at low temperatures and what sort of results to expect in the future. For this reason a PNY GeForce 4 MX 440 display adapter was used, which has been found to tolerate very high bus speeds. Later, we'll do some ATI Radeon 9700 Pro tests and try for a new 3DMark2001 record.
Below a series of pictures describing the events and some general pictures of the [assembly|system].
[lots of pictures]
The tests didn't start easy, even though the system did agree to start Windows XP at 3913MHz. The Pifast test didn't complete at all. After testing for a hour we started to get a grip on the situation. The CPU didn't tolerate really low temperatures. The tests started running noticeably better, when the bowl wasn't frozen solid.
[more pictures]
At the end of the first day of testing, I managed to run the Pifast test at 3917 MHz and reach a new record of 24.17 seconds.
Finally, I managed to complete the Superpi test at 3998 MHz at 39 seconds, which is the current record on the Superpi ranking list maintained by [the|some] Japanese.
I also ran the SiSoft Sandra CPU and Memory benchmark tests at 3920MHz (21 x 186MHz). The results speak for themselves.
Sandra's CPU tests says the bus speed is 145 MHz, because a TurboPLL coupling was used on the motherboard. A 18.43 MHz crystal was used, from which the correct bus speed can be derived:
(18,43MHz / 14,3MHz) * 145MHz = 186,55MHz
Finally, we checked how high we could go and still get the CPU to wake up.
[POST picture]
The system managed to POST at 4339 MHz with a bus speed of 206 MHz. Let's hope we break the magical 4 GHz boundary in our next test. In other words, there's more to come...