P4 2.2GHz Overclocked to 3.5GHz

GraveD sent linkage to a site explaining how a homemade nitrogen cooling system overclocked a P4 from 2.2Ghz to an incredible 3.5ghz. There's plenty of stuff to poke at over there. Update: 01/17 20:42 GMT by T : boaworm writes: "According to this paper, the Finnish geeks have successfully oveclocked a Pentium 4 to 3675 Mhz. They claim it is a new World Record, and it sure looks like they beaten another O/C'd Pentium 4 submitted earlier today on slashdot. (Summary in English in the end)."

Comments

Mirror:

[Saint Aardvark]

http://saintaardvarkthecarpeted.com/oracle

Re:I know, let's make the story something it isn't

[leuk_he]

We use them in some extremely large and significant datawarehousing situations and have probably managed to kill the server once in three years

Then you certainly have not tried the following thing:
-Install forms 4.5 now. Forms 4.5 is year 2000 complient, the installer crashes (!)(there is a patch but.....)
-use plsql records in a 7.3.4. DB. Bye bye instance.
-use designer 2000 1.2.

and the list goes on and on.

Re:Operating systems

[sql*kitten]

Other are just ports.

Well, yes and no. Oracle is developed in two layers, VOS or "Virtual Operating System" abstracts all the primitives like threads, pipes, file handling etc from the underlying OS, and Oracle itself, which is written to VOS APIs. So the core Oracle engineering team code for pure functionality, and the VOS teams keep their APIs in sync with each other on different platforms. If Oracle want to target a new OS or platform, they simply develop a VOS for it.

I believe the Oracle engineers work on Suns, but they are targetting VOS, not Solaris directly.

That's why you have to start the service before you can start the instance on NT. Win32 is sufficiently different from Unix-like systems to need an environment in place before starting Oracle, whereas Unix-like systems can just link the VOS into the main binary. It needs to work like this because Oracle is Oracle, on any platform, once you log into SQL*Plus, it's exactly the same. Oracle is more complex than many operating systems, it provides its own scheduling, resource quotas (storage and CPU), IPC mechanisms (AQ, DBMS_PIPE, DBMS_ALERT, etc), programming languages (PL/SQL and Java) and a whole lot more. It is a platform in its own right.

Those crazy Finns

[milkmandan9]

Are at it too.

Here you can see they've got it to boot at 3.674GHz. The page is in Finnish (I assume), but there's some English text at the bottom too.

link to the most important part

[carlcmc]

the picture of the results that ISNT IN JAPANESE.

Re:Neat, now how about my box...?

[hattig]

You can overclock the G4's in the Power Macs if you know how. The multiplier is encoded by some resistors near the CPU on the CPU card, and if you know the layout, you can overclock your 800MHz G4 reliably to 933MHz or even 1GHz. I don't know if you can do the same with the new iMac2, I reckon there is a good chance of it once someone finds out where these resistors are on the motherboard.

Amigans have been overclocking their 68k series processors for years. Witness the 28MHz 68000 for the A500, or the 75MHz 68060s (instead of 50MHz), a 50% overclock easy when decent coolers are added to the equation.

It is harder to overclock the 8-bits, as the rest of the system messes up in many cases, and the video output and audio go haywire. But it has been done (Enterprise 64 in one example, upping the 5MHz Z80 by a MHz or two, or replacing it with ones that do 10's of MHz I believe. Dunno about the C64 or Atari 8-bits though.

I'm amazed

[k98sven]

That the thing still functions at 77 Kelvin.
Incredible that the motherboard doesn't break, at that low
temperature, the resin should undergo a phase transition and become very, very brittle.

(Some notes for all those D.I.Y.ers out there:
Liquid nitrogen is cheaper than milk.
Short-circuits can't occur, N2 doesn't conduct.)

Although why he used nitrogen and not dry ice, which is cheaper, easier to handle, and probably
better for these purposes, beats me.

Re:Compare it to an Athlon

[kawaichan]

Do you want to konw why P4 is slower than Athlon? Probably one of the main reason is not the subsystem in your case, since RC5 only utilizes your CPU, P4 has a longer pipeline than your Athlon, making the CPU doing less calculation per clock.

Long Pipeline does have an advantage however, longer the pipeline usually mean higher Mhz.

Re:Neat, now how about my box...?

[larien]

Of course, the problem with overclocking something like a speccy or C64 is that you're likely to speed up the gameplay of anything you're running! These systems didn't have the same kind of clock as modern PCs so timing was handled by running NOPs (or whatever). Instead of increased frame rates (or possibly as well as), you have a game running twice the speed! Sometimes you might want that, but you probably don't.

As an aside, I bought a game ages ago that must have been written for a 386/486 and ran it on my P233 (as it was at the time). The game was unplayable because of the speed. I dread to think how it would run on my Athlon 1800+XP... *shudder*

Re:Neat, now how about my box...?

[jeffb]

The Powerbooks work this way too, except that the resistors involved are smd type instead of the easier to fiddle with ones on the desktop. In fact, on the desktops, you can clock them with a Circuit Works pen and an X-Acto, if you'd prefer not to solder. I've been running my 1st generation iBook (300MHz) at 400MHz for almost 2 years now, and it has worked well since the day I 'clocked it. (processor temp went up an average of only 6F, which is good, since the iBook also doesn't have a fan). The chart reviewing the various combinations of processor speeds and ratios available on the iBooks and Powerbooks is available at The Mystic Room, if you're curious. (or just want to see a 666MHz iBook in the Apple System Profiler, if only for a sec.)

:jeffb Apple Certified Tech