Griff (Italy) Hits +100% Reference Clock on Intel 875P

We spend most of our time and energy on HWBOT pouring over the latest benchmark submissions made with the latest and greatest hardware that money can buy. It’s doubtless the result of our natural urge to appreciate and enjoy the progress of humanity as it searches for ever improving levels of computational performance. But not all of us on HWBOT are living in the now. There are overclockers out there that have dug so deep down into a particular technology rabbit hole that the search for a winning score becomes a lifelong quest.

Such is the case with Italian overlocker Griff who has managed to finally take down the highest reference clock for the Intel 875P chipset with a clock of 404.1MHz (+100%). This beats the previous best from legendary overclocker Hipro5 from Greece who set the record at 400.7MHz way back in February 2004. Yes, that’s right. We have a new highest reference clock, the best for over 12 years.

Griff used an Intel Celeron 3500MHz,a single core, single threaded Northwood based CPU, which using a multiplier of x12 he managed to push to 4849.14MHz thanks to an FSB or reference clock speed of 404MHz. The work was done using an ASUS P4C800 board, which I’m thinking at this stage has had a pretty hard (if venerable) life.

Congrats and kudos to Griff. You can check out the submission from Griff here on HWBOT.


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Italy sburnolo says:

Mitico!!!!

Italy MMarcio says:

Gryphon Power!!

Belgium leeghoofd says:

Well done mate!!

United States Strong Island says:

awesome work

Ukraine StingerYar says:

Good job! :)

Italy GRIFF says:

Thanks guys. Some precisions: Cpu = Mobile Pentium 4 2.8GHz fsb 533 Below -130 degrees becomes celeron))))

Italy GRIFF says:


Spi 1M run at fsb 390 mhz))) Absolute WR!

United States MR. Horse says:

Nice work. Net burst cpu's are fun to play with.

United Kingdom gavbon says:

Awesome sauce GRIFF :D

United States MR. Horse says:

am I the only one that caught this?
He must be the best overclock ever, to archive such a over clock at 0v

Strunkenbold says:

Great result!

Italy GRIFF says:


Add 2 voltmeters for Vnb and Vddr monitoring. 125mW resistor is the Vnb mod: start at 1.76V and modify into the bios. Short black wire is the Vddr mod: disabled for TCCD for this time. Next time introduce the jumpers for enable/disable of this mods.
Add 1 voltmeter for Vcpu monitoring. Desold Vcore mod at this time because not working with s478 to s479 adapter. I have not made Vdroop mod because i have a negative Vdroop after mosfet mod.
Mosfet mod: replaced all mosfets with more powerfull, before the mod were 60+50A for a phase, after the mod (75+75)+75A (Hot only with Prescott).
Replace all capacitors of Vnb, Vtt, Vddr and Vsb alimentations.
Add ceramic capacitors on the back and front of the MB.

Strunkenbold says:

Great modding skills! Does replacing mosfets help a lot for Prescott OC?

United Kingdom GeorgeStorm says:

Impressive work, loving the extent of the mods!

Italy GRIFF says:

Strunkenbold said: Great modding skills! Does replacing mosfets help a lot for Prescott OC?
Original power system have a very low reliability.

Indonesia speed.fastest says:

GRIFF for president! The most awesome mod i've seen for a while. Good Job!

Italy superpatodonaldo says:

great mod green apples are mandatory :D

South Africa Oj0 says:

That's such an epic throwback to the olden days, I love it!!

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