Highest %-overclock?

Hi!
Im wondering what your overclocking records are in percent. What processors/mobos etc were u using?

My record:
Duron 600@1521MHz vcore 2,75V
Mobo: Abit KT7A V-modded
Ram: Twinmos pc-166
Powersupply: 2x300W serverPSU + enermax 431W which were hooked up to the mobo with y-connector
Cooling: LN2

This was done last year for the swedish overclocking championship which me and a friend won. Gonna compete this year also and im interested in what a celeron 266/566 would do.

Edit: I might add that the CPU died when we crossed 3V. The cpu did 1000MHz stable on air with a fop32-1. Around 1200MHz with watercooling.

dunno dude.. but u are famous atleast:)
fooking nice vcore:)

http://www.sweclockers.com/html/arti...vave/isigt.jpg
More pictures are in this article: http://www.sweclockers.com/html/arti...ave.php?page=1
Vitalizer: Hehe, thanx.

1700+

1466 to 3114 MHz in a -50C prom

crazy!

My 1700xp does 2.5ghz prime stable so thats over 1ghz oc on air. Simply impressive.

There are some 2.4's here that do 4300+ but its not near the same overclock % wise as that 600 @ 1500....

Quote:

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Originally posted by Soulburner
There are some 2.4's here that do 4300+ but its not near the same overclock % wise as that 600 @ 1500....

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Yeah the competition is %-wise thats why im especially interested in a celeron 566 or duron 600. With a good mobo id reckon 200% with the 566 is feasible. Btw, what are the lowest speed of the durons? I think i remember there being some duron 550:s for a while. Now one of those would be a killer i think.

Celeron 300s at 750 are pretty impressive too.

Quote:

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Originally posted by Soulburner
Celeron 300s at 750 are pretty impressive too.

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Yes, hmm, a celeron 266 which has no L2-cache and lower speed than the celeron 300 should be able to get higher. Only problem is that its hard to get celeron 266:s. But 300A:s shouldnt be a problem. Another problem though is to get a good mobo with a 1/5 or 1/6 divider. 50MHz on pci isnt very tempting :/

there`s a thread around here where some guys oced a 100->247

147% ...

i lost the link sry...

mine is 1600->2420(2440 but not stable enough(water 1.85v)

im currently tryin to oc old cpu`s ... 266->333
333->412

the prob is i dont have any info about the mobos and just tryed some jumper settings... i hope ill find away to vmod a old 333 or 400 celeron ... but my 9500np is more important atm ... need watercooling (maybe pelt) and vmods... got the stuff for vmod but no coolin yet...(won`t vmod untill watercooling)

X

Highest I had my old Celeron 366 is 595 @ 2.2v on air.. heh 8-)

I've got a cache-less 266 around somewhere.. gonna take a while to dig it up, though... and my Abit BE6-II is dead 8-(

wheres the link to this 4x86 (25mhz) @ 600mhz? that was even without ln2 or dryice, just some simple phase change :)

Dual Cel 366, Abit BP6 at 5.5X125 @ 2.2v, stable for everyday use. Never was able to get them to run 100% O/C though.

For a very short time i had one of the fastest duallies around ;)

Quote:

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Originally posted by sjohnson
Dual Cel 366, Abit BP6 at 5.5X125 @ 2.2v, stable for everyday use. Never was able to get them to run 100% O/C though.

For a very short time i had one of the fastest duallies around ;)

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Sweet :) I remember the celeron 300@464 days. Damn that cpu was good, spanked the p2 450 at the time.

u should get like a 133mhz Pentium with MMX , i had that at 200mhz on air for a lil

well this all doesnt get close to this 4x86 oc somebody posted a few days ago, at least not percentage wise...

33mhz@247mhz thats a 748% oc ;)

http://totl.net/Eunuch/Eunuch2.html

a 750% oc on a 1700+ would mean 11ghz...

JC old CPU that he got to 3.1 ghz...

3.2 (14x230) under dry ice.
I have no idea of the percentage.

1.47 to 3.2 ghz= what?

3.2/1.47 X 100 == 218% (rounded) - a 118% overclock :)

1.6a P4 195fsb on a abit TH7II RDRAM board 95% OC.

Quote:

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Originally posted by HMB
Hi!
Im wondering what your overclocking records are in percent. What processors/mobos etc were u using?

... This was done last year for the swedish overclocking championship which me and a friend won.

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hi,
i win the overclocking championship in hannover/germany. :D
more pics and info here on my page
i clocked a mobile celeron northwood to 100%, this was enough to win.
- epox 4gea ; i845GE
- 300w psu ; hec300 lr-pt
- corsair xms 3500C2 ; running only ddr400
- modded box-cooler from 3.06 (thermistor removing, lapping...)
- celi has no ihs, add a plate under the socket to hold the board flat for good hs-contact.
- vcore at 1,65v
- the rig running all days seti with this speed. :D
- ... nothing special

my epox 4pea800 made a cleaner vcore an i can run the chip up to 100mhz faster (3100mhz).

http://www.rio71.de/bilder/docm/docm...@3000-cpuz.png

http://www.rio71.de/bilder/docm/docm...-rig-innen.jpg

HMB

50MHz PCI is possible, my Barracuda IV can do it at ata100 ;), if the hd don't like highfsb you can allways lower to ata33 or pio-4 should help some.
But finding a mobo, memory that can do 200MHz FSB? That's harder and can a old mobo do that without turboPLL?

Much be hard finding both Duron 600 or celeron 300 though and a good slot 1 board that gotta be hard to find. How do you plan to do that? I dont think blocket is gonna help ;)

Good luck.


Rio71

Nice celeron overclock, 100% on air is pretty impressive. :D

Quote:

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Originally posted by Tedinde
1.6a P4 195fsb on a abit TH7II RDRAM board 95% OC.

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i like this one, cuz not only is he getting a 95% oc, also getting the 95% performanfce. Dont get me wrong that 100% oc of celery is nice,actually very nice, but its still just a celery!:stick: :toast:

Quote:

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but its still just a celery

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but this mobile has 256kb L2 cache.
@ 3100mhz need 2:30 for a seti bench-wu (angle 0.416) here my list
the performance ist not really bad, the desktop cely with 128kb need much longer
i have a second c4m running 2000 @ 3300. im looking for an i865/i875 board but no luck yet.
when it all together, i made some benchis... sure with "aha"-effect. :)

ph sorry didnt know that :toast: How much are the mobile celery's?

Quote:

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33mhz@247mhz thats a 748% oc

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still wondering how you actually set a i486 33MHz CPU up to 247MHz =)

I got 750MHz WCPUID shout out of a 333MHz celeron (125.25% OC) and 735MHz out of a 366MHz celery (both water+pelt cooled on Abit ZM6 mobo).

1.6A@3560MHz (122.5% OC) R404 cooled

Quote:

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How much are the mobile celery's?

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cheap, around 40 and 45 euro's on german ebay. :D
notebook pull possibly.

I have an unlocked Duron 600 that a friend gave me. I haven't had time to play with it yet, but when I do it will go in a modded Mach1 that does -48c. I expect it should do well. ;)

rio, its a nice oc, but just like you said its nothing special... ive seen 3.5ghz+ ocs with those celerons...

honestly, this german ocing competition is a joke. when i heard of the systems that won i was like wtf? you kidding me? the systems that won the competition are like average systems on this forum ^^

i think one guy won because he got his 1700+ to 2400 on air... thats a joke! ive seen a 1700+@2700 on air already...
and 2400 is the average any 1700+ will do, even on air.

this gocm is a joke...

dont get me wrong, 3ghz on that celly is still nice! :toast: what are your temps and have you tried water on it?

hey, no prob :toast:

gocm... but the race is only so good, as ppl joining the race.
27 was previous listet, on start only 8.
two fails in stability benchmarks (half hour prime95), now only 6..... and 9 prices to win. :( :D
anyway, this was the first one, the second next year hopefully better.
we need more participant's...:stick: ;)
http://www.docm.org

no, i have not tryed water on it. this rig is only a cruncher with 1gig hdd and 2mb pci mystique and win98se.:D
temps are normal, not over 50°C .

if i would have know about docm before i would have joined... maybe i would have won something with my 1700+@10x240 on air... :D

see you next year? i defense my title. :toast:

hehe :D

i will tell a good friend about this competition, he is running an old 1ghz t-bird @1.9ghz with simple watercooling ;)

In the swedish competition only k6-2 and up from AMD is allowed and p2/celeron from intel. So no 486 etc will do :/ 750% overclock wouldnt look that bad though :D

You could try a p4 1.6a with ln2 on a canterwood board maybe.. Or a 1700+ on ln2? If you went the ln2 and turbopll route you could lock the pci/agp busses on a 440bx board, and with enough volts and the right stick of pc166 and a good celery 300a..... :D

i440BX?.. that's my fav.

In the P3 class, the highest i've gone with a P3 copper 1000e and 440bx board was 1,450mhz@ 2.3v air cooled & PSU rail mods. Sandra CPU Burn-in passed@ max temp of 45C. Second highest overclock in the P3 database.

i sell 100% oced usb vibrators. all of them tesed on monkeys

Quote:

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Originally posted by Vlad Draculea
dont tell me you are really believing the 486 oc, it is ovious it is a joke, computer inside a fridge without insulation and with condensing vodka botles over????.by the way veri nice ocs here. my personal best percentage wise is duron 600@1100 2.55v on watercooling with ice inside, the core was at 8ºc i think.

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Ouch, my duron 600 that died did 1200MHz on plain water and 2.2Vcore. And my cpu wasnt even good. I want one of the duron 600:s that do 1200MHz on air :)

Quote:

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Originally posted by RuKK
You could try a p4 1.6a with ln2 on a canterwood board maybe.. Or a 1700+ on ln2? If you went the ln2 and turbopll route you could lock the pci/agp busses on a 440bx board, and with enough volts and the right stick of pc166 and a good celery 300a..... :D

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Now that sounds sweet, hmm any guide to make a pll on your own? And a celery 266 would be better with no L2-cache ;)

If you can, grab yourself a Celeron 300 non A and a decent motherboard, mine went @ 600MHz for a year or so on stock cooling on a PC-Chips motherboard, with decent cooling and a huge chunk of voltage you should be able to get one to insane speeds. :D

Hmm I have qite good oc with my Celeron 700MHz on BH6 with TurboPLL and some extra MosFETs, PSU mods (3.3V@4v, 5V@6V).

The highest Sandra stable frequency was 1929.7MHz. At 3.2V. This is 184MHz FSB on old 440BX chipset, with pair of Micron PC133 CL2 registered modules.

And here is screenshot:
http://www2.arnes.si/~mbabic/TribesMan@Cel700.JPG

And that is about 175.6% overclock...

TribesMan,
Very Impressive!:D
:toast:

Thank you!

TribesMan: That's extreme :toast: Hmm, about these turbo-plls, u have to buy one right? :( kinda hard to make one on your own.

AFAIK, most turbo pll's are made, not bought. I had a link to a description of howto, but it's broke. I'll see what I can find.

Adding a turbo PLL is only slightly harder than a volt mod, once you know what is needed.

Quote:

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Originally posted by sjohnson
AFAIK, most turbo pll's are made, not bought. I had a link to a description of howto, but it's broke. I'll see what I can find.

Adding a turbo PLL is only slightly harder than a volt mod, once you know what is needed.

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Steve,
Please do try to dig up that link. I'm very interested in reading it also. Thanks :D

tribesman, and that is with what cooling??
3.2V for a 0.18u celery???
micron reg. ram at 184 with CAS2-2-2 timings?
what kind of sandra unbuffered u got?

HMB, building Turbo is not too difficult (its rather simple if you happen to have some old/dead mobo u dont need..)
some discussion about Turbos

The link I had was from a regular at ocworkbench/ECS forums about 2 years ago. If I can remember his posting name I might be able to find his posts with the link to his turbo pll mods. His instructions look much like those in macci's post though, but IIRC there was a little more detail and explanation.

Pegelius is his post name. Another Finn - crazy Finns ;)

The turbo PLL mod I remembered was for the ECS K7S5a, here's that link: http://www.ratol.fi/~ppiippo/Mods/Tu...threesteps.jpg

If you browse around under http://www.ratol.fi/~ppiippo/Mods you'll see he's done other PLL mods as well.

The biggest problem for the mod is finding the cut and solder points for your motherboard. The rest is just finding the components and adding them onto your board ;)

I've built turbopll myself. Yes it is kinda hard to do but it is doable.

here is picture of it:
http://www2.arnes.si/~mbabic/BH6/TurboPLL.JPG

The cooling was some high RMP 8cm fan on cooper heatsink. And some -25°C air (it was winter in the time of testing). And that is it. No water no promy or vapochill...

Gotta love that chip. It works 1400MHz @ 2.3V. For 3 years now.

Celery 700@1.9GHz aircooled??
Funny if a 0.18u CPU can hit higher speeds than a 0.13u tualatin celery.. ;)

can you tell some details about that turbo of yours (min, max output MHz etc)?
for instance what are the dipswitches for? and how do you feed ref. clocks to mobo? That device in the piccy looks like its only replacing the crystal.

Yes that's right macci, that device only replaces crystal and does not create clk signal for processor. Because it is very hard to find chips that are capable working at frequencies higher than 50MHz. My turbopll creates frequencies from about 5MHz up to 32MHz with 2kHz steps. So I was able to change real CPU frequency with 120kHz steps. Good enough. DIP switches are here for seting multiplier wich then set output frequency to 2kHz*multiplier. 4 DIP switches are used to form one digit. The first group of four switches are able to be set from 0 to 15, other three groups are only able to go from 0 to 9. So max multi is 15999*. And max frequency is 15999*2000kHz=32MHz.
This TurboPLL is completely my design from components I was able to get here in Slovenia. You can probably see that it is quite messy setup. The multiplier chip I used, I was only able to get it in SMD pckage so i kinda converted it to DIL. I was also having a lot of problems with output signal and with frequency fluctuations but I was able to solve it using coax output cable and very high capacity on RC filter... but this is another story.

And yes 3.2V on .18u celery is kinda stupid but I was testing in steps. First my plan was to try 2.6V but then I saw that this chip just loves high voltages so i proceeded in testing at higher voltages. I was lucky that MOSFets on board were able to do such a high voltages. But the MOSFets were modded (another pair of them was added on board) and the choke was also replaced with some high duty one.

I also have one picture of my mobo...
http://www2.arnes.si/~mbabic/BH6/BH6.JPG

This is picture with no TurboPLL connected but you can probably see the connector placed where crystal should be placed.

Other mods on this motherboard are fixed PCI frequency (to 40MHz)(on picture just under the northbridge) and fixed realtime clock frequency(14.318MHz wich is the same as original crystal frequency) (needed it because my turboPLL replaced the crystal and then the windows clock was wrong... (on picture at side of mobo). You can probably see the additional MOSFets and high duty choke just under it.

And it was air cooled. If you haven't noticed the power consumption at that voltage and frequency was 94W wich is about as much as 2400MHz AthloXP @ 1.9V

I dont have any Sandra unbuffered benchmarks so I can't help you with that.

yeeesh!

Wish my BE6-II still worked so I could do something like that to it.. wonder how much my Celeron 400 would like 3.5v? heh..

Tribesman: How well do you think the BH6 can handle high fsb:s? If im gonna compete this year 200% overclock is what im aiming for. Celeron 266/300(non-A) is what i think the best candidate. Hmm, or i could just unlock multi? :D

Edit: Oh and tribesman, about your vcore, hey i've been there, once you start pumping it up and gain more speed you just dont wanna stop :D Too bad my duron did stop :( up from 30W to 250W (according to the online wattage calculator). I was shocked to see that i even could go past 3V.

BH6 will handle 150MHz without any problem. I did that on two diferent cpus (P2 350, Cel 700 and P3 1G) The highest was 184MHz with celeron, but that is probably because of PSU Vmods. I was running 3.3 rail at 4V. And because chipset and RAM on BH6 is powered directly from 3.3V line, raising that line helps alot.

And you are completely right about pumping up the voltage. I'm sure if my mobo supported 4V CPU voltage I'd try it.

Find the power feed line and "inject" the 5v rail into it and dumb it down to 4v.... heh.

Quote:

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Originally posted by STEvil
Find the power feed line and "inject" the 5v rail into it and dumb it down to 4v.... heh.

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Or better yet let it stay at 5V :cool:

Edit. Anyhow, im thinking of not participating in this years competition, im selling my prometeia and the new prize is a vapochill :rolleyes: Havent got enough time for it either when i come to think of it :(

So your gonna let OC&Burn win this one without any competition

Quote:

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Originally posted by meh
So your gonna let OC&Burn win this one without any competition

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Probably, im also thinking about moving to Gävle so as i said, not alot of time :)

Let's see. 1700+ that does 2466. 1800+ that does 2633. 1800+ that does 2533. 2400+ barton mobile (1800mhz) that does 2600.
Those are the chips I've got right now. All do this fun stuff under standard water. About a 72% overclock is my best there.

Best i've managed was either my 1.2c @ 1.75 2.25v or my 2000+ @ 2600mhz 2.05v... both were just sitting in the bios for a coupe hours, though.. 8-/

:D :D :D

http://www.xtremesystems.org/forums/...&postid=262258

wow with only 1.6v? nice!
^^

Teh Celery 300 @ 600 was my finest hour, although it only ran like that for an hour or two, damn PC-Chips motherboard, no voltage settings.

How can i calculate how many % i've overclocked?

im no good in math :P

Quote:

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Originally posted by Gef
How can i calculate how many % i've overclocked?

im no good in math :P

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Start by getting rid of that av, no logical thought possible with her there ;)

Divide your max O/C MHz by Stock MHz.

Multiply by 100, then subtract 100. That's your OC percent.

Ok so...if i had overclocked mine to 3.5GHz then it would be:

3500/2600*100-100=34,61%

am i right?

I'm norwegian, i think i understand that subtract is minus right? :P

Gef - you are correct, 34,61% O/C.

I'll try to watch my English (seriously), don't want to confuse anyone over language ;)