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Pentium 4 Overclocked to 7.1GHz, Sets World Record 392
Netmonger writes "This Japanese guy
overclocked a Pentium 4 to 7.132GHz!! The system managed to calculate pi to 1 million decimal places in 18.516 seconds, setting the world's record." The article notes that a Pentium 4 had been overclocked faster earlier this year, but at that speed it was not possible for the machine to function beyond BIOS. Of course, they'd yet to try diverting power from the dilthium crystal reactor to the deflector array.
World record? (Score:5, Insightful)
Re:World record? (Score:3, Informative)
He overclocked the Intel Pentium 4 670 processor with stock speed of 3.80GHz.
The processor system bus was overclocked to 1520MHz.
processor's voltage was pumped up to 1.70V, significantly higher than default setting; memory latency settings were CL4 3-3-4, memory voltage was set to 2.3V.
Still no word on what his 3dmark2005 score was! (CPU and Total, of course)
Re:World record? (Score:3, Insightful)
Re:World record? (Score:2)
Re:World record? (Score:2)
Re:World record? (Score:5, Funny)
Re:World record? (Score:5, Informative)
It worked for me. I can open a pdf in less than the time it takes a politician to go from idealistic young upstart to corporate whore.
Re:World record? (Score:3, Insightful)
Re:World record? (Score:3, Interesting)
Re:World record? (Score:3, Informative)
Re:World record? (Score:2)
Re:World record? (Score:3, Informative)
Re:World record? (Score:4, Informative)
Re:World record? (Score:5, Informative)
Re:World record? (Score:3, Informative)
Re:World record? (Score:5, Insightful)
quite frankly intel was supposed to be selling 6-7 ghz p4's around now... the fact that they can't but can be overclocked that fast is proof that the architecture was designed to run at those clock speeds, but that actually implementing that kind of clock speed would require insane cooling and power requirements that most sane people find unacceptable.
Designed to run at 7Ghz? (Score:3, Insightful)
I don't see this as proof that they were designed to run this fast. 4Ghz, maybe (and only from new technologies that came to surface AFTER the P4 was originally designed) - any super high speed claims that were made were entirely marketing.
Re:Designed to run at 7Ghz? (Score:3, Interesting)
So the devil's in the transistors and trace losses. I wonder how this will pan out at 65nm... smaller transistors are potentially faster but they have to be large enough to drive the nets and the loads these nets represent scale less than linearly with process technology. S
The future is asynchronous! (Score:4, Interesting)
The real future is asynchronous CPUs, that are actually clockless. They generate much less heat and consume much less power. The only reason that they aren't replacing the current batch of chips fast, is that all chip design and testing processes are built around clocked CPUs.
A few articles on the subject:
- Will Self-timed Asynchronous Logic Rescue CPU Design? [embedded.com]
- Computer Chips Without Clocks [transentric.com]
Re:World record? (Score:2, Interesting)
Calculating pi is a series of mathematical operations where you can't do the next one without the prior because you need the remainders.
That's not entirely true. There exists a digit-extraction [wolfram.com] algorithm for computing pi [wolfram.com] starting at the nth digit, without the need to compute any other digits. The only catch is that it only works on base 16.
Re:World record? (Score:5, Informative)
Use the BBP Formula [wolfram.com]. Pifast is just a benchark, like all benchmarks it's rather silly. The record is for PCs, the top 500 supercomputers [top500.org] are benchmarked using another silly benchmark (LINPACK).
Re:World record? (Score:5, Informative)
Leaving aside the BBP algorithm which several other people have mentioned, you're mostly correct here.
How exactly do you break a series of operations that depend on the priors into chunks for a supercomputer to rip through?
But you're going a bit astray here. Large classical computations of Pi are exercises in performing big Fast Fourier Transforms; and there are very good algorithms for doing those in parallel. Using the AGM or a Borwein iteration, computing a million digits of Pi requires approximately 200 full-length FFTs plus some additional linear-time trivially parallelizable work.
So anyway, it looks like this calculating pi is a record in general, not for just a PC.
Give me a 4 processor 3.8GHz Pentium 4 system, and I can beat the reported time by a factor of two. If you can do parallel FFTs, you can do a parallel classical computation of Pi.
Re:World record? (Score:5, Interesting)
RTFA, please, (Score:5, Informative)
Ok, I'll tell you, lazy boy: besides cooling with liquid N2, they tweaked the processor and the memory voltages.
And some luck. (Score:5, Informative)
The last set of great overclocked CPU's were the Celeron 300's. Many of those went to 450-500 MHz with no problem. A very few could be made to hit 600 MHz, though it is questionable on how reliable they were at that point. Certainly reliable enough to calculate the value of PI quickly; but you wouldn't want one for reliable web server.
Granted, some of the one's which could do 450-500 MHz were made for that speed, and then sold as 300's. But certainly not all of them.
The bottom line is that cherry-picking your CPU's helps lead to a better chance of success with overclocking.
Comment removed (Score:4, Insightful)
Re:World record? (Score:3, Funny)
Re:World record? (Score:2)
Re:World record? (Score:2)
Re:Does it really matter? (Score:3, Funny)
I'm sure it would've smoked this P4 thing...
Besides... 486 is 121.5 times bigger than 4!
Re:Does it really matter? (Score:5, Funny)
Easy. They reversed the polarity. You can fix anything by reversing the polarity.
Re:World record? (Score:2)
But.,. (Score:4, Funny)
Retep Vosnul
Re:But.,. (Score:5, Interesting)
Slashdot memes (Score:3, Funny)
or:
Couldn't get Vista Beta to boot?
Prove it (Score:5, Funny)
Re:Prove it (Score:2)
How 'bout that?
According to his calculation... (Score:5, Funny)
That's cool but (Score:5, Interesting)
Re:That's cool but (Score:3, Interesting)
Re:That's cool but (Score:5, Funny)
Jesse James' calculator?? (Score:5, Funny)
Re:Jesse James' calculator?? (Score:2)
In related news.. (Score:5, Funny)
Casualty figures as yet unknown.
Re:In related news.. (Score:5, Funny)
Re:In related news.. (Score:2, Funny)
Re:In related news.. (Score:3, Insightful)
You should really use your head for more than a hat rack.
Hiroshima and Nagasaki wasn't about winning ... (Score:3, Interesting)
The other reason the bomb was used is the usual simple one: Because the US military had it. They had a new toy and were happy to still have a reason to use it.
And BTW:
Re:In related news.. (Score:5, Insightful)
It is really funny. Hell I even joke about the holocaust and Native American slaughter. Guess what, so do my Jewish and Native American friends. If you don't have a sense of humor then I pity you.
I'm about as liberal as can be but I absolutely hate political correctness. It doesn't help anyone, it just gives some jerkoffs the opportunity to complain about trivial shit. If you really want to complain about something try taking a stab at shit that is going on now and affecting us now like the criminals in office and their illegal war, illegal torture, and illegal detention.
Re:In related news.. (Score:5, Funny)
So please, don't ever joke about the holocaust.
Re:In related news.. (Score:3, Funny)
"Ah, September 11, the day that the song "its rainng men" came to fruition".
and people womder... (Score:4, Funny)
Re:and people womder... (Score:5, Funny)
More info and a pic or two (Score:5, Insightful)
Re:More info and a pic or two (Score:5, Informative)
Re:More info and a pic or two (Score:2)
Booting Windows XP (Score:5, Funny)
Funny, since, no matter how fast I OC a Windows XP box, the XP "loading bar" still moves the same old speed.
Re:Booting Windows XP (Score:2, Interesting)
Or did you think all of the data was stored in your L2 cache?
Re:Booting Windows XP (Score:2)
Re:Booting Windows XP (Score:3, Insightful)
Get a solid state hard drive. Texas Memory Systems if you have serious cash; Gigabyte iRam if you're on a budget.
pi=42 (Score:5, Funny)
actual link (Score:5, Informative)
http://www.xtremesystems.org/forums/showthread.ph
Take down the server. (Score:2)
Apple was right! (Score:5, Funny)
Re:Apple was right! (Score:2)
Apple is actually selling liquid-cooled hardware (high end G5 systems).
Might be interesting to see if they try use that technology on the future intel based workstations...
Re:Apple was right! (Score:3, Informative)
There are no reservoirs or tubes or pumps so its not "actually" liquid-cooled hardware unlike what most of us think liquid cooling is which involves the above.
Diverting power from the dilthium crystal reactor? (Score:5, Funny)
And people said (Score:5, Funny)
Re:And people said (Score:2)
that x86 would never hit 100MHz!
And some of us wish it hadn't. 680x0 assembly was so beautiful . . .
Yeah but... (Score:2, Interesting)
Still slower than G4! (Score:5, Funny)
Dry Ice Slot (Score:5, Interesting)
You want that render to finish before lunch? Just slide in a brick of dry ice and watch the steam come out the sides as your motherboard's temperature sensor gives the go-ahead to crank the clock up to 7 GHz.
Too Solid (Score:2)
Re:Dry Ice Slot (Score:2)
AMD64 (Score:2, Interesting)
Or does it already exist?
All I know is I see all these liquid nitrogen P4s and think "wtf...where's amd?"
oblig (Score:2)
Comparison (Score:2, Informative)
I tried the same test on my 2Ghz P4 Northwood with 768MB RAM. It took 1min 34sec to calculate pi to 1 million digits.
Re:Comparison (Score:2)
Stardate 7234.1 (Score:5, Funny)
Bones: You green blooded sonofabitch.
Kirk: Bones... shut... up... Scotty, I need 7ghz... now.
Scotty: I canna do it, cap'n. It'll blow the mains, and Windows 9000 will crash.
Kirk: No... excuses... Scotty... just get me... 7ghz.
Scotty (resigned): Aye, cap'n.
Uruha: We're getting in a signal for Starfleet Command. It's Admiral Gates.
Kirk: Put... him... on...
Admiral Gates: Here at Microsoft we believe in innovation. Thus we are sending you SP23482378485847825727347198874741 which will allow Windows 9000 to interact with an overclocked Pentium without making rude sounds and the voice of the computer changing from Majel Barrett to Carrot Top. Let me demonstrate.
Spock: Admiral Gates, it appears that your demonstration computer has exploded, taking out a large chunk of the planet Earth.
Scotty: Cap'n, we've got 7ghz now!
Kirk: Good work, Scotty. Sulu... reboot... the... computer.
Spock: Captain, it appears there's a penguin on the main viewer.
Re:Stardate 7234.1 (Score:5, Funny)
- Chris
athlon 2400+ using FASTPI 1M places in 4.4 secs (Score:4, Interesting)
"18.516 must be wrong. My athlon 2400+ did
1 million places of PI using FASTPI in 4.4 secs.
Maybe the number should read 1.8516 secs.
That would be more in line with factors of
speed differences between my 2400 and
the P4 system."
Re:athlon 2400+ using FASTPI 1M places in 4.4 secs (Score:3, Informative)
Re:athlon 2400+ using FASTPI 1M places in 4.4 secs (Score:2, Funny)
Re:athlon 2400+ using FASTPI 1M places in 4.4 secs (Score:2)
Re:athlon 2400+ using FASTPI 1M places in 4.4 secs (Score:4, Informative)
Some stats: http://www.pcstats.com/articleview.cfm?articleid=
http://www.planetamd64.com/lofiversion/index.php/
I'm not sure about fastpi. But pifast appears to allow 2-4GHz computers to do 10 million digits of pi in about 30 seconds.
turnabout... (Score:2)
What's the big deal? (Score:2, Funny)
Oh wait, did you say GigaHertz?
Now at 7285.1 MHz (Score:4, Informative)
Calculating 1m decimal places of Pi now down to 18.093s...
http://www.xtremesystems.org/forums/showthread.ph
Vista requirements (Score:5, Funny)
Intel (Score:3, Insightful)
heh (Score:2)
Deflector Array? (Score:3, Insightful)
I think it might be more profitable to redirect the power to the processor.
My only question is.... (Score:3, Funny)
World record? LOL (Score:3, Informative)
BTW, the same computer takes 189 seconds [istar.ca] to compute 2^20 (~1 million) digits using SuperPi. Among the community [yahoo.com] of Pi-calculating programmers, it's well known that SuperPi is terribly slow. I don't know why overclockers still hang on to it when most programs out there for calculating Pi are faster than it.
Doesn't Count (Score:3, Insightful)
I'd say that not getting out of BIOS doesn't count as actually successfully overclocking at that speed. That's like saying you raised your car's compression to 150:1 successfully, with the one shortcoming being that the head shattered into fragments when the first spark plug fired.
Re:Heat? (Score:2)
Hahaha... (Score:2)
I'm guessing you've never taken a single class in digital electronics, computer architecture, or electrical engineering.
Re:The "dangers" of overclocking. (Score:4, Informative)
Your statement is true on its face, but do you really understand why this guy could get his chip to overclock so high? He's not cooling it in LN2 just to keep it from melting (although that is certainly very important).
At low temperatures, typical silicon transistors operate much faster, and wires have less impedance, thus allowing a properly-designed chip to operate correctly at a much higher frequency than it would normally be able to achieve.
It's certainly not useful for a user who wouldn't have a constant source of LN2 available, but the fact that it can be done makes some interesting engineering scenarios possible.
Re:wow... (Score:3, Informative)
Re:wow... (Score:5, Funny)
You intend pulling a Cray-2 out of your ass?!
Are you a fan of the Goatse man by any chance?