Poll

What speed will the K6-II 333 Reach?

333MHz
0 (0%)
334-400MHz
0 (0%)
401-450MHz
2 (18.2%)
451-500MHz
2 (18.2%)
501-525MHz
1 (9.1%)
526-550MHz
6 (54.5%)

Total Members Voted: 11

Voting closed: October 30, 2004 11:20 am CDT

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Author Topic: Supercooling Update - Stage II, Dry Ice Methodology Testing  (Read 4702 times)

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Particle

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Supercooling Update - Stage II, Dry Ice Methodology Testing
« on: October 30, 2004 09:28 am CDT »
I've begun Stage II of my project to supercool my AthlonXP-M.  My project goal is to achieve 3.2GHz or better, but I don't want to kill any components.  That's why I'm practicing on lesser equipment first.

Today's project goal:  AMD K6-II 333MHz at 550.  I've got my heatsink made up already.  It is a two by two inch block of aluminum that is an inch and a quarter tall.  On top of this is a sheet aluminum tray (custom built) screwed into the aluminum block with two self-tapping screws.  The tray is designed to hold dry ice, while the aluminum provides an easy way for this temperature difference to reach the CPU core.  There will be Arctic Silver 5 between the aluminum block and the CPU.

The heatsink itself is surrounded with 5 layers of double-sticky sided foam tape.  This stuff is only half as thick as what I used in the peltier experiment, so that's why I doubled it up.  Hopefully this will prove thick enough to prevent condensation.  Since dry ice is only -78.5C, I didn't take extreme measures to ensure that no condensation occurs.  In my future liquid nitrogen experiments, there will be massive insulation since it is at an impressive -195.5C.  I've recently found where to obtain LN2 here =)

Once I conduct the dry ice experiment, I will move to LN2 and then ultimately to LN2 on an XP-M/nForce2 solution.  The only things left between me and that goal are:
1)  Money for a new motherboard for my main machine
2)  Perfection of the technique on a lesser rig

The reason I am using old hardware to test my cooling methods is quite simple.  Not only is it cheap, but more importantly, it puts off less heat.  If it doesn't condensate there, with less load, it won't condensate when more heat is being pumped into it.

Results and pictures will be posted today or tomorrow, hopefully.
« Last Edit: October 30, 2004 11:20 am CDT by Particle »
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remote-control

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« Reply #1 on: October 30, 2004 11:07 am CDT »
Wow, that's awesome particle! But you said you were using dry ice correct? Wouldn't the dry ice turn into CO2 pretty quickly? Even if you did have it insulated? That's awesome that you know where to get Liquid N2, be sure to tell us how it turns out!
« Last Edit: December 31, 1969 06:00 pm CST by remote-control »
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Particle

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« Reply #2 on: October 30, 2004 11:19 am CDT »
Yeah, but as it evaporates in CO2, I will just add more to top tray.  It shouldn't evaporate extremely fast, either.  The insulation is to prevent condensation, not to keep it from evaporating really fast (though it does do that by not wasting the potential).

Who here wants to wager?
« Last Edit: December 31, 1969 06:00 pm CST by Particle »
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nesso

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« Reply #3 on: October 30, 2004 04:43 pm CDT »
WTF!?!?! dude particle i think you're taking this too far.... you're investing in liquid nitrogen?! for a computer!!!!

that mess is expensive...
« Last Edit: December 31, 1969 06:00 pm CST by nesso »
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Particle

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« Reply #4 on: October 30, 2004 05:03 pm CDT »
Too far?!  I want liquid helium but I cannot find any.  BTW, LN2 only costs in the area of 20 cents per liter.
« Last Edit: December 31, 1969 06:00 pm CST by Particle »
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« Reply #5 on: October 30, 2004 07:24 pm CDT »
LOL too far? Particle is taking nothing too far. There's been super computers out now for like 5 years that were cooled by liquid nitrogen.  Oh and particle, my bet is only around 400-450 mhz, not because it could go higher because of the cooling, but would the cpu architecture allow it? Just think of the speeds you could attain with a 3.6 ghz p4, or better yet, an amd athlon 64 4000+!!
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Particle

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« Reply #6 on: October 30, 2004 08:30 pm CDT »
Liquid helium evaporates really quickly.  That's the down side with using it.

I bought a 3.3oz can of di-electric grease from O'Riley's Auto Parts tonight ($8) to prep the rig for tomorrow's torture run.

The K6 line went up to 550MHz.  Granted, that is with the K6-III series, but I believe the transistors will switch fast enough to do 550.  The only question is if I will be able to get it cold enough to do so.

I'd really like to see the AMD XP-M silicon reach 3.2-3.5GHz.  I've already seen it hit 2.7GHz on air, so it might get up to there.  There is no promise on that one though.
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« Reply #7 on: October 30, 2004 09:49 pm CDT »
Lol, holy malarkey Particle. You have your 2600+ running at 2.6 ghz... LOL that's insane, a 3500+ 64 is like 2.2 ghz right? I can just image it being 3.4 ghz, bad ass though
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jusAnthony

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« Reply #8 on: October 31, 2004 09:37 am CST »
I would like to know what would you do with the extra power of overclocking and why overclock anyway?

AS
« Last Edit: December 31, 1969 06:00 pm CST by jusAnthony »
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Particle

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« Reply #9 on: October 31, 2004 10:00 am CST »
When you overclock, you make a chip capable of more calculations.  Without exotic cooling, this 2000MHz processor will do 2605MHz.  That is using standard cooling technology (granted, of higher quality than average).  Liquid nitrogen is just for getting benchmark scores and bragging rights.  I'm obsessed with having the fastest CPU around and always have been.  Now that I have a way to do LN2, it's coming out.
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« Reply #10 on: October 31, 2004 05:09 pm CST »
So I could overclock my 1.3GHz AMD Athlon XP 2700+ 333FSB to a higher clock speed on my manfacturer computer (PowerSpec). That would be a good experiment, what I need a cooling method and set some settings in the bio? I'll do some research tonight.

AS
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Hersh

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« Reply #11 on: October 31, 2004 05:59 pm CST »
May want to look into your motherboard. It could support overclocking software (which would be helpful.)

Or it could lock the multiplyer or bus speed. (Which would suck.)
« Last Edit: December 31, 1969 06:00 pm CST by Hersh »
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Particle

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« Reply #12 on: November 1, 2004 12:16 am CST »
It may be large or small, but normal air cooling lets you OC anyhow.  No need for water cooling or vapochillish systems.
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« Reply #13 on: November 1, 2004 02:05 am CST »
Where in the hell did you get LN2 for 20¢ a liter??
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« Reply #14 on: November 3, 2004 05:32 pm CST »
cool the northbridge with dry ice while you are at it.  That'll provide a more stable overclock.

Or how about this, get one of those Jefi reservoirs and create a water cooling system.  Then put ice cubes in the water.
« Last Edit: December 31, 1969 06:00 pm CST by Darwin »
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