Opp + FX-51 = #1 ORB... Yeah...baby!!!

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12-11-2003, 01:26 AM
zakelwe

Quote:

Originally posted by chilly1
This is a cryo pump and is used in vacume chambers, this is a tame one there are cryo pumps that can go down to 2K ...-456.07
The other end of this is a five hp water cooled hydrogen compressor, It uses absorbers in the discharge to get the proper density of hydrogen. This cryo pump will freeze nitrogen.
IBM has had CPU's at -200 and lower, they discovered that CMOS's switching speed is doubled at these temperatures.. what we are finding from the Ln2 guys is that around -120 something is happening that wipes out the processors. It may be that the dissimilar elements of the processor are contracting at different rates and this is the breaking point???

That last sentence seems very plausible, contracting at different rates and different amounts ? I suppose plopping LN2 on a cpu at room temp produces a very large rate of temperature change, whereas other methods are relatively slow.

Have you or Fugger noticed any decrease in performance of Fuggers chip over time, I assume it goes through cycles of cold and warm , ie is not always down at -80C.

Regards

Andy
12-11-2003, 01:39 AM
NapalmV5

Originally posted by chilly1
"IBM has had CPU's at -200 and lower, they discovered that CMOS's switching speed is doubled at these temperatures.. what we are finding from the Ln2 guys is that around -120 something is happening that wipes out the processors. It may be that the dissimilar elements of the processor are contracting at different rates and this is the breaking point???"

Originally posted by zakelwe
"That last sentence seems very plausible, contracting at different rates and different amounts ? I suppose plopping LN2 on a cpu at room temp produces a very large rate of temperature change, whereas other methods are relatively slow.

Have you or Fugger noticed any decrease in performance of Fuggers chip over time, I assume it goes through cycles of cold and warm , ie is not always down at -80C."

So, what would be the lowest safe temp ? -110-115 ?
12-11-2003, 02:08 AM
STEvil

A freezer or mini fridge would work really nice to stop condensation actually, the only problem is that you would ONLY want the motherboard and peripherals in there, NOT any other hardware than absolutely needs to be..!

All the -50c and under guys should have their hardware in a fridge moded to a case, hehe.
12-11-2003, 02:28 AM
Geforce4ti4200

freezing nitrogen? wow man!

"Have you or Fugger noticed any decrease in performance of Fuggers chip over time, I assume it goes through cycles of cold and warm , ie is not always down at -80C."

yea in the 3dmark runs I have noticed his cpu is usually overclocked to like 4.2GHz his max was 4.44GHz but I rarely see him run at the max, more like 4.35GHz sometimes as low as 4.05GHz
12-11-2003, 02:41 AM
NapalmV5

Quote:

Originally posted by STEvil
A freezer or mini fridge would work really nice to stop condensation actually, the only problem is that you would ONLY want the motherboard and peripherals in there, NOT any other hardware than absolutely needs to be..!

All the -50c and under guys should have their hardware in a fridge moded to a case, hehe.

It's not just the condensation, it's also about cooling the cooling system/s, maybe a second freezer just for that.

A ~20 cu. ft freezer at max cooling should handle 2 vapochills/machs/bakers + the other components, just assuming.
12-11-2003, 03:00 AM
G H Z

Quote:

Originally posted by chilly1
I hope we don't leave a crater u know dark side of the moon and all...........

Haha! Ya that would not be good.

Man, you sure have some interesting projects there. I wish I knew how to build a simple homemade Prommy/cascade with a minifridge or something like that.

Can you point me in the direction of any not overly technical information on this? Not that I couldn't understand it, I simply don't have the time to dedicate to learning HVAC design principles.

G H Z~
12-11-2003, 04:26 AM
Tom Holck

Quote:

Originally posted by JCviggen
suggest it to Tom Holck :p

:thumbsup:

We need a to moon system?! one for the grafik also:rolleyes:
12-11-2003, 04:32 AM
TheDude

Fugger,

Whatever happened to that nitrogen cooled laser sighting cooler off the jet that you outbid me on? Ever come up with a way to power it? Still have it? Let chilly1 take a look at that thing. :D
12-11-2003, 04:46 AM
Charles Wirth

Another engineer talked me out of it reminding me that I was not able to power it.
12-11-2003, 04:59 AM
TheDude

ahhh...too bad...was hoping there might be some way to power it. Would have been awesome to play with. :D
12-11-2003, 05:27 AM
Tom Holck

insulation

Quote:

Originally posted by TheDude
I think it was Dabit who made an interesting solution to insulation problem by isolating the entire board...either under pressure or in a vaccum..forget which. I would think under pressure would be easier to maintain, but I think he had it in a vaccumn.

I have my MOD on -6/-8 degree. Almost all komponent including mosfet are frozen:D

I am going to make a solution, where CO2 is in a bag around the MOB. It is the water in the air, that is the problem, without water, there is no kondensation and iceformation.

Just make an air-tight solution and remove the water.
12-11-2003, 10:40 AM
Evil_Spork

indeed this is true, thats why someone suggested a sealed nitrogen container for the mobo. i think that would work pretty well being a pretty stable gas and all.

anyone know the temp of liquid oxygen? i seem to remember it being pretty darn cold.
12-11-2003, 11:06 AM
Try-this

Re: insulation

Quote:

Originally posted by Tom Holck
I have my MOD on -6/-8 degree. Almost all komponent including mosfet are frozen:D

I am going to make a solution, where CO2 is in a bag around the MOB. It is the water in the air, that is the problem, without water, there is no kondensation and iceformation.

Just make an air-tight solution and remove the water.

Sounds like another interesting plan Tom :D

BTW: how is the 3dmark2k coming along?
12-11-2003, 11:46 AM
Tom Holck

Re: Re: insulation

Quote:

Originally posted by Try-this

BTW: how is the 3dmark2k coming along? [/B]

The grafik still not god only 585/456
I want a killer bench, and I think I can do it.

A little time in the weekend we vill se.
:rolleyes: :(
12-11-2003, 11:56 AM
Try-this

Re: Re: Re: insulation

Quote:

Originally posted by Tom Holck
The grafik still not god only 585/456
I want a killer bench, and I think I can do it.

A little time in the weekend we vill se.
:rolleyes: :(

To bad about that graphics card :(

Hope you get it going better :stick: ;)

(could be nice if I had a system where a 9800 XT was holding me back :p: ) :D
12-11-2003, 01:31 PM
Geforce4ti4200

Re: Re: Re: insulation

Quote:

Originally posted by Tom Holck
The grafik still not god only 585/456
I want a killer bench, and I think I can do it.

A little time in the weekend we vill se.
:rolleyes: :(

Those clocks arent too bad, should be good for 30k with that cpu of yours. Then you can try other 9800xt's for 31k :banana:
12-11-2003, 04:54 PM
STEvil

Quote:

Originally posted by NapalmV5
It's not just the condensation, it's also about cooling the cooling system/s, maybe a second freezer just for that.

A ~20 cu. ft freezer at max cooling should handle 2 vapochills/machs/bakers + the other components, just assuming.

The problem is that your cooling systems create a lot of heat by themselves, not to mention all the heat they "remove" needs to be dumped somewhere, too.

A freezer is a limited airspace, and i'd say give it 5 minutes before its +30 internally.

A mini freezer/fridge used only to put the motherboard in (hdd's get fairly hot!) would stop condensation if you had it kick in around -10c and kick off around -30. Could cut a hole and hook up a dehumidifier too if you opened it to change stuff a lot.
12-11-2003, 06:51 PM
Charles Wirth

MM, I think you got mixed up.

IBM vs MRI

The head is from a MRI, IBM has been doing -200 testing
12-11-2003, 09:25 PM
STEvil

so build an evaporator block with fins in it instead of just a chamber?
12-11-2003, 10:36 PM
G H Z

Quote:

Originally posted by MickeyMouse
lol im not in your conversation I just copy and pasted that info from some site, lol..

Im wayyyy off your topic here I just here alot of users stating L-helium is better than LN2 where as it doesn't have the heat removal compasity as LN2 :)

Haha, we knew that. Everything was spelled correctly;)
12-12-2003, 05:32 AM
Tom Holck

Cascade -112 C load

Quote:

Originally posted by uclajd
Hey you cascade gurus,

Just wondering how long power-up takes on your rigs. IOW, how long do your cascades have to run before they are at absolute zero?

Obviously, you don't just power-on your PC's "cold," so to speak.

Mine takes 10 min booting time. When the sek stage turns on, I can turn on the computer, then the temp drop 5 degree pr/sek.
Right down to -112C.

When I turn on later the time is mutch faster, about 5-7 min.
:D
12-12-2003, 05:57 AM
Tom Holck

1 Attachment(s)

4853

Quote:

Originally posted by FUGGER
I was able to squeeze a little more from my Mach1

http://fugger.netfirms.com/4764.jpg

Opp has one in the 4.7's as well. Post it up Opp

Now the cpu kontakt is god.

what about one in the 4.8's
Now going back to the FX for more fun:banana:
12-12-2003, 06:09 AM
TheDude

4.85MHZ! Freakin awesome man! :eek:
:toast:
12-12-2003, 06:18 AM
JCviggen

though 90 MHz isnt a lot for being like 70C colder lol
12-12-2003, 06:32 AM
TheDude

Quote:

Originally posted by JCviggen
though 90 MHz isnt a lot for being like 70C colder lol

Yeah...it's getting to the point of diminishing returns on the super cooling.

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