Rather, how high can you go? What are some of the impressive OCing clocks you've done, and how'd you go about doing it?

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233mhz Cyrix at 100mhz. Instead of a 3.5x multiplier * 66.6mhz, I went to a 2x * 50mhz. Believe it or not, even though it is a Cyrix, I didn't need a fan

considering that i havent the slightest clue about over/underclocking. i have an amd k6-2@351mhz.
it was (as of yesterday) running @ 301mhz. as i was messin around with the various jumpers in both the voltagages and the fsb settings i somehow dropped my k6 down to 151mhz! i of course changed this and finally found something better than i had (the 351mhz mark) and left it there.

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"I have taken all knowledge to be my province." -Sir Francis Bacon

My best o/c was a Duron 600@1100. It took 2.07v to reach the 1100 mark and run stable. I used a 15k ohm .25w resistor and did the voltage mod to my KT7-Raid mobo.

I have a T-Bird 1200@1400 (2.0v), T-Bird 900@1200(2.12v), and a throw down K6-2 500@600 (2.4V). The only other system that I o/c'ed was an old Pentium 233 to 300mhz. The 233 was my first o/c ever.

How bout an old 486 33mhz to 52 mhz Now those were the days =)

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-sect0r

I'm not kidding, in case you haven't seen my post on hardware configuration. I'm running a P2-400 underclocked to 266, because I'm running it on a 440LX motherboard...Waaahhhhh....

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"And knowing is half the battle!"

Duron 600@1000, not all that impressive I suppose, but the largest percentage jump I have ever achieved.

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i got a cel 600 to 1055 1.95v
p3 866 to 982 1.85v
then my mobo fried and took out the p3, put the cel in
and fried that too...[frown]

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my celeron is a 400@500 and will soon be a 400@700 or 800

I cant even get my PIII 500 to overclock. Tried everything, multiplier, fsb, voltage, nothing works. I do have a PII 300@ 336(nothing special)

Get a program that overclocks and if that dont work did you know you can get motherboards that can overclock from the bios and if that dont work then get a new fucken cpu

I just got my p3 700 running at 933...took a couple of hours to round my ide cables and modify my case to get some better cooling...but it actually ended up being worth it...

oh yeah...1.85v...alpha pep66 w/delta fan...3 panaflo case fans...haven't tried to higher...since I'm using a bx I don't have a 1/2 divided for my agp bus so it's high as is...

-eMpTy

Iv'e got a K6-III+ 450@600Mhz with a multiplier set to 2.0 which the CPU reroutes to 6.0 = 600 MHz. This is done on the Epox MVP3G5 motherboard.

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ECS K7S5A
T-Bird 1400
NO O/C! "AAAAAUUUU"

Empty I have a p3 800 (133 mhz bus) but the multiplier is locked.. Just about 20 mins ago I set the bus speed to 140 mhz, and on sisoftsandra it went from 2165 to 2282 MIPS, I don't know if thats worth the increase for the possible problems it could cause (things catching on fire, burning up, etc) Im sort of a newbie to overclocking but any info would be very appreciated

Well, before you start pushing your system there are a few things you should understand.

First off, system bus speeds. All late intel chips are multiplier locked so you overclock them by raising your front side bus speed which is what the cpu bases it's speed on. By raising this fsb speed you affect your pci bus, your agp bus and your memory bus. The thing to do is get a chip with a 100Mhz fsb speed because you could put it in a system designed to run at 133Mhz and the only thing that would be run out of specification would be the processor.

Right now your fsb is 140Mhz meaning your agp bus is 70Mhz...4Mhz higher than spec and your pci bus is 35Mhz...2Mhz higher than spec. Your memory is a full 7Mhz higher than spec. Now most video cards can handle up to 89Mhz agp bus speeds, but not all video cards, so that is a possible limit. Also if you have generic ram it might not handle anything higher than 133Mhz. Your pci bus is generally capable of handling anything you throw at it, but if you have a lot of pci cards one or more of them might not like the high speeds and might decide not to work.

Basically the idea with overclocking is to isolate the processor and the memory as much as possible so that they are your limiting factor. That's why it's good to get a processor with a lower fsb. I can run my 700 at 933 and with pc133 ram the only thing out of spec is the processor.

Also keep in mind that cooling is absolutely a must. If you want more out of your processor you have to cool it or otherwise you will be shortening it's lifespan. So get a good heatsink and fan (I like alpha heatsinks myself). And keep your case cool too.

Air flow through your case is a much bigger factor than you can imagine. A well organized case that allows airflow made the difference for me. Also raising the voltage on your processor can help stable things out.

As for whether or not it's worth it...well, unless you're a game addict the extra speed probably won't do you much good. But a lot of people overclock just for the sake of overclocking anyways. It's a good way to get the most from your handpicked parts and it's a fun hobby for a lot of people...

-eMpTy