Got The FSB To 504MHz!! (XP1600 overclocked to 2.27GHz Stable!!!

[Mr. $T$]

If you look at it he cooles it with liquid nitrogen

Na that is nothing gimme' sonthin' colder

 

[dropadrop]

You can read it in english (somewhat) here:

http://babelfish.altavista.com/tr?d...carea/xp1600/piopio1028.htm&lp=ja_en&x=31&y=1

I don't have any reason to think it's not valid. I would rather be suprised if you could not squeese 300mhz more using ln2 then using air cooling. Remember that the processor would have temperatures of around -170 degreese centigrade!

 

[PCphreak]

If you look at it he cooles it with liquid nitrogen

Na that is nothing gimme' sonthin' colder

How 'bout liquid Helium? Doesn't get much colder...boiling off at just under absolute zero. Depending on atmospheric conditions, it will boil at close to -452*F. Absolute Zero is impossible by the way, but a neat theory though.
I think this guy was using Dry Ice though...because he only states -30 degrees....whether that's Celcius or Farenheit, it's still not in the LN2 range...

I think I may find out just how much liquid helium per liter costs, and try my own overclocking experiment....hmmmmm

-PC

 

[Deadphishy]

is it so hard to beleave that something just can't be. is it so hard to think after we die it's nothing, no thoughts, no feellings, no heaven or hell. In a world where scientific fact is proven wrong everyday. i wouldn't go as far to say 0 kalven isn't possible. must thier always be matter, must thier always be energy. why is it so hard to beleave that some where off millions of light years away, there is nothen, just "space", no energy no matter, nothing. Humans have this need to feel that we are not alone. that no matter where we are that there will be some thing their with us, to help use explaine why we are thier, and how we got thier. The idea of "nothing" scares us.



few, you like that. well just spiten my thoughts. no personal attack on you pcphreak, just the idea of impossible.

i don't see this as to importent since 99.9 percent of us won't go that far to run a cpu for a few minutes.

 

[PCphreak]

no personal attack on you pcphreak, just the idea of impossible.

Hey, none taken....I can see your point, because we've come to know in this life that 'there are exceptions to every rule'.
To say reaching 0 Kelvin isn't possible, would be better to say it as: "0 Kelvin isn't scientifically proven possible".
I am very interested in Quantum Mechanics, and within this extension to conventional physics it's shown that in even 'Zero-Point energy' (the lowest level of energy), the energy of a particle will be non-zero.

Based on life-times worth of studies in physics, I believe energy will exist at all times.
Matter is made up of energy, and matter cannot be created or destroyed.

To say that energy may not exist in some certain place, is to say just that: That place does not exist-
Because after all; as far as the human mind is concerned about believing an object physically exists, it must KNOW that the object's matter exists as well.
If the mind knows the matter doesn't exist, then the object will not exist to the mind either.
Whether the mind will be forced into believing the object exists regardless of the fact, will be dependent upon faith and faith only.
This I believe, is the only reason some people CHOOSE not to believe in God.

-PC

 

[OC-Master]

This article is legit!

This is simply an example of what LN2 is capable when put into an overclockers hands. IMO this setup was a really stupid setup hence why would someone have a "value" type setup (GF4TI4200 and a XP1600) but then go all out with the LN2 which costs hundreds of dollers.

These people are overclockers..... hardcore overclockers who dont care about even the least bit of value/performance LOL
.

OC-Master

 

[dxiw]

ln2 isn't hundred of dollars

in the lab at skool we get the **** cheap like 15 for canister of crap

 

[OC Detective]

This article is legit!

This is simply an example of what LN2 is capable when put into an overclockers hands. IMO this setup was a really stupid setup hence why would someone have a "value" type setup (GF4TI4200 and a XP1600) but then go all out with the LN2 which costs hundreds of dollers.

These people are overclockers..... hardcore overclockers who dont care about even the least bit of value/performance LOL
.

OC-Master

Sure it maybe legit but it is certainly not stable!

 

[dropadrop]

I don't think it's trying to be stable. They are trying how far the chip will go... Seriously!

Everytime I see somebody doing ln2 cooling I hear people bashing them down for the fact that it's not something they will do daily, not stable ect. ect. ect. IMO 95% of people who are overclocking are doing it mainly for fun, and to see how far they can take their rig. Well, these guys are taking their rig's further then anyone here, and I would imagine their daily comptuers are running just about as stable and fast as anyones here.

 

[OC Detective]

I don't think it's trying to be stable. They are trying how far the chip will go... Seriously!

Everytime I see somebody doing ln2 cooling I hear people bashing them down for the fact that it's not something they will do daily, not stable ect. ect. ect. IMO 95% of people who are overclocking are doing it mainly for fun, and to see how far they can take their rig. Well, these guys are taking their rig's further then anyone here, and I would imagine their daily comptuers are running just about as stable and fast as anyones here.

I was merely stating it is not stable because the subject header said it was.....

 

[dropadrop]

I was merely stating it is not stable because the subject header said it was.....

 

[Tipycol]

Sure. But when you say average, I'm not sure just how 'average your talkin'!?
To modify the mechanics of the PLL's operation requires good de-soldering skills for starters. I'll try to give you a simplified overview as to how the PLL works, and what needs to be modified.
The basic function of a PLL or also called "clock synthesizer" is to produce an electrical pulse as an output, which is used in keeping the entire system's busses in time or in rhythm together and each at their respective frequency. The PLL has to reference it's output frequencies from somewhere also. The PLL's reference freq. come from the Clock Crystal, which is at a pre-defined frequency. It's at a pre-defined frequency because of physics. The Clock Crystal is just that: Quartz Crystal. Whenever a certain amount of voltage is applied to Quartz, it vibrates at a certain rate or frequency. Some watches and clocks keep their time this way, because it's very accurate.

So let's do a quick review:
The clock crystal produces a frequency for reference. The PLL uses this reference so it knows what to base it's output frequencies on. The PLL will only divide or multiply the clock crystal's frequency according to what it's output(s) need, and according to the way the PLL's been programmed for.
They only have a certain amount of programmed divisors or multipliers.
______________________________________________
EXAMPLE: (The PCI output has been programmed in the PLL to stay at 33 MHz)

If FSB = 100 MHz
then PCI = /3 (or 1/3 divisor to keep it at 33.33 MHz)

If FSB = 133 MHz
then PCI = /4 (or 1/4 divisor to keep it at 33 MHz)
______________________________________________

There is sometimes two PLL's onboard:
1) One of them does RAM, and
2) the other operates the FSB, AGP, & PCI.
We'll focus on #2.

Ok, now you may already be following what I'll soon be getting at..so I'll ask this question:


(Q.) What would happen if we replaced the clock crystal with another of a higher frequency value?

(A.) You essentially 'lie' to the PLL, so it's actual output frequencies will be higher than it would have with the original clock crystal.


This can be both good and bad.

Good, because your squeezing more of an overclock from your FSB.

Bad because some busses other than the FSB, will be too overdriven. Especially the time(hour becomes less than 60min), the PCI bus becomes out of spec, as well as the AGP. This leads to instability...


(Q.) So, how do you stop the other busses from becoming overdriven?

(A.) You intercept their input lines where they leave the original PLL, and wire them into your own PLL circuit you made on another circuit board complete with the original Clock Crystal you removed earlier.


So now you have the capabilty of having a set frequency for the PCI & AGP bus regardless of the FSB setting.

I do realize I haven't given a thorough overview (for the sake of time), and that in parts it may seem sketchy & hard to follow, but I'll try to update this with better explanations and examples....or pictures if I can find a host....

-PC

Err well...do you know where I could at least get more info on the topic? I just would like to see someone who has done it and has it explained.


Thanks

Tipycol

 

[dropadrop]

Using a ppl chip is very common when people are overclocking the p4's over 4ghz. This is the first time I saw anyone doing it with an amd chip.

Did'nt really awnser your question, but maby you could get more info in the intel forum? Or from google.

 

[Dave65]

That is amazzzing though.

 

[EluSiOn]

Ha.... I can read that article without a problem, Let me translate for you all.


This test conducted to test the ram made by A-DATA DDR 400, however, I discovered that AMD XP 1600+'s amazing protential by accident. This XP 1600+ has been purchased over six month which spent most its time collecting dust in the corner. Using dry ice (drikold) and also ethanol, it achieved 252 mhz bus speed. A-DATA has astonishing ability to produce this high quality RAM. However, when the bus speed is at 252, of course there is no way to achieve more optimal setting. This test should be consider as a show only, few HD can tolerant this kind of PCI bus speed. If you use 5:1 ratio to calculate PCI bus speed, it would be 50.5 mhz. Super Amazing. Under this kind of impact, Super Pi achieved a record of 45 seconds and it is the fastest AMD speed record in the country (TW). In addition, this RAM stick from A-Data also used on Gigabyte 8PE6667 Ultra(845PE) in 2-5-2-2 top performance condition, achieve DDR409 result normally and finished all the tests. Therefore this RAM should be consider super hi quality!!


Ok, he is not a Hard Core OC, he is just testing the ram stick out!!! and he never intent to run that system on a daily basis.

 

[CyberFed]

ok i was just reading through and i have 2 things i wanna ask/say

PCphreak 1. What do you do for a living you sound really smart like a physist or engineer...?

2. I thought we have hit absolute zero in some lab for like a bazillionth of a second , ???

 

[PCphreak]

ok i was just reading through and i have 2 things i wanna ask/say
PCphreak 1. What do you do for a living you sound really smart like a physist or engineer...?
2. I thought we have hit absolute zero in some lab for like a bazillionth of a second , ???

Unfortunately I'm neither, nor anything currently related. I'm in skilled trades employed at a business my father owns- though I do IT repairs, builds, and troubleshoot on the side for local businesses and individuals...
I spend a lot of time and money reading really...maybe too much!? Barnes & Nobles regular. All of the books I have are related to science...- both physical science and computer science ( though I like some philosophy ) Science is really my true hobby. I am infatuated with Nikola Tesla's work & are trying to build my own coil. I also have a cousin who is an Electrical Engineer, so I have a lot of handme-down books from him ( 1984 ).
Now you have the condensed version of PCphreak's autobiography.

-PC

 

[CyberFed]

cool man good for your you, im a soon to be engineer, lots a work but its fun and i love it.

 

[PCphreak]

cool man good for your you, im a soon to be engineer, lots a work but its fun and i love it.

Congrat's...it's really good when your persuiting something because you truly enjoy it.

-PC