Pentium 4 651

[merdat]

I came across the chip and just wondered how this pentium 4 651 3.4 g would stack up against a c2d and what it might overclock to . I always thought the the pentium extremes only went to about 3.012g.

[GSte]

I think they went up to about 3.8GHz at the time.... a few of them overclocked to ludicrous proportions, I think someone got one up to about 8GHz on LN2.....

Compared to a C2D they will be awful, I'm pretty sure I read something saying that a 2.4GHz C2D was the equivalent of a 6.6GHz P4, but with bigger cache......

[Kelainefes]

Yeah, they were a very inefficent architecture, needed loads of power and produced some serious heat.
That, and today's motherboards don't support them.

[GSte]

Aye, here we go....

Intel’s Pentium 4 Overclocked to 7.1GHz, Sets World’s Record
Overclockers Set World’s Super PI Record with Prescott 2M at 7.1GHz

by Anton Shilov

[ 08/11/2005 | 11:16 PM ]

A Japanese overclocker has managed to overclock Intel Pentium 4 670 microprocessor to 7.132GHz and even run certain benchmarks on the system that was cooled down by liquid nitrogen.

In order to accomplish the extreme overclocking Japanese enthusiast Memesana, who published his results at XtremeSystems web-site, used ASUS P5WD2 Premium mainboard based on Intel’s i955X core-logic, Corsair PC2-5400UL 512MB memory modules as well as 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.

According to the posted statement, the system managed to calculate π (pi) number to 1 million decimal places in 18.516 seconds, which is currently the world’s record.

Earlier this year another overclocker has managed to push hit Intel Pentium 4 570J chip to 7.22GHz, but at that clock-speed the PC could function only in BIOS. The maximum speed at which he could boot Windows XP operating system and perform memory testing was 6.60GHz.

X-bit labs - News around the Web - Intel’s Pentium 4 Overclocked to 7.1GHz, Sets World’s Record

the system managed to calculate π (pi) number to 1 million decimal places in 18.516 seconds, which is currently the world’s record.

Back in the olden days, before Abraham Lincoln put an end to the megahertz myth -- or was it Theodore Roosevelt, we always get so confused -- the Pentium 4 ruled the land, with its deep instruction pipeline and PR-friendly xtreem clock speeds. Luckily, Intel wised up and started beefing up the quantity and efficiency of cores instead of just the megahertz, but the megahertz myth still lives on in our hearts, and OC Team Italy keeps that hope alive with its latest achievement: an 8000MHz (8GHz in layman's terms) overclocked Pentium 4. The lucky chip to reach such ridiculous frequencies is a "Cedar Mill" Intel Pentium 4 631, with a standard clock speed of 3GHz. It wasn't just a case of flipping a few pins here and there, the OC folks used a modified ASUS P5B motherboard, with an added copper pipe and a few voltage modifications, along with a little bit of your garden-variety liquid nitrogen to keep it all cool. Golf claps all around, OC, now can you do something to rev up a processor that's actually going to be useful for something? Wait. What's gotten into us? Keep up the good work!

http://www.overclock.net/hardware-ne...roken-6-a.html

[Clunk]

Just shows how things are moving on.

[Kelainefes]

BTW OC Team Italy managed something over 8100, and then another guy beat them by less than 10 MHz.
I seriously doubt the systems were PI stable.

[merdat]

Thanks for all the reply's guys -very interesting indeed.