View Full Version : Mass of container - effect on OC
charlie
10-29-2004, 09:14 AM
I've built a new LN2 container, and it's rather....errmmmm..... MASSIVE.
My base plate is solid 4" x 3" copper @ .675" thickness. Hehehehe....the baseplate alone is 1300 grams. Total weight is 1850 grams of pure copper.
My previous experiments have shown that LN2 use will give some large temp fluctuations....plate may reach -125C, then heat to -85C.... go back down to -130C then back up to -90C.
Here's my theory: with the MASSIVE baseplate, it should hold a better temp, albeit not as low in normal use. Of course, it will get just as cold, but will take longer to reach that temp. The strategy will be something like this: boot rig @ -50C or so... with high Vcore and default FSB, in desktop, lower temp to -100C or so, and use CG to adjust FSB. The rig should be less sensitive to temp swings, and should be able to hold -110C under load. Funny how today LN2 is equal to a triple cascade, lol..... just doesn't cost $3000.
C
Didnt jason57570 comeup with that long ago and thats how he was able to run 3300mhz on fx53 when you all said only cascades could do that :stick:
charlie
10-29-2004, 09:35 AM
my fx-53 went 3441mHz on DI, hehehe....
C
LardArse
10-29-2004, 10:30 AM
Actually, it is possible to hold -140 to -150c load with the right size, mine was pretty humungous/thick. I held -140C at load with a S478 prescott which is one of the hottest stuff around. It will still hold the temp even after it went dry and only started dropping after a while. Maybe you will find the same if your monitor the base plate temp.
Only thing is if the board will like it that cold.
charlie
10-29-2004, 11:46 AM
Actually, it is possible to hold -140 to -150c load with the right size, mine was pretty humungous/thick. I held -140C at load with a S478 prescott which is one of the hottest stuff around. It will still hold the temp even after it went dry and only started dropping after a while. Maybe you will find the same if your monitor the base plate temp.
Only thing is if the board will like it that cold.
excellent,
that's what I'm hoping for. As I'm sure you know, it's difficult to pour and adjust CG and transfer some more from dewar into cup, then tune.....
sometimes the tube will go "dry" for 30-60 seconds and I'm hoping that mass will help. Now on DI, I found the thick base was NOT good. It took a LONG time for the baseplate to cool and then when the base finally warmed, like by the 3rd or 4th test in '01... the DI couldn't cool it.
C
Actually, it is possible to hold -140 to -150c load with the right size, mine was pretty humungous/thick. I held -140C at load with a S478 prescott which is one of the hottest stuff around. It will still hold the temp even after it went dry and only started dropping after a while. Maybe you will find the same if your monitor the base plate temp.
Only thing is if the board will like it that cold.
That's with LN2..My findings with LN2 were, you first freeze the container completly, and than start benching (Ice everywhere in container) the LN2 will evaporate at a insane rate..but the temp will stay stable even when it runs dry.
Without a completly freezed up container you can go easier on the LN2 pouring..but the temp will keep fluctuating.
My container is a herefishy design..pretty big and bulcky, 1/2inch baseplate btw.
But it does the job great.
I can post pics of it later..if you want to see it.
Jason uses the same container....And from my findings it is one of the best designs around. (Jason came up with it)
JacobHansen
11-07-2004, 12:30 AM
Hey Charlie.
I've made a base for my new container - its 55MM wide/45 Thick and as you can se i drilled a 35MM hole into the middle.. Hopeing for some good stable temps. :P
The pictures has been taken with a poor webcam, new pics later day.
http://overclocking.dk/img/users/34531_04.jpg
http://overclocking.dk/img/users/34531_03.jpg
http://overclocking.dk/img/users/34531_05.jpg
charlie
11-07-2004, 12:10 PM
Hey Charlie.
I've made a base for my new container - its 55MM wide/45 Thick and as you can se i drilled a 35MM hole into the middle.. Hopeing for some good stable temps. :P
The pictures has been taken with a poor webcam, new pics later day.
http://overclocking.dk/img/users/34531_04.jpg
http://overclocking.dk/img/users/34531_03.jpg
http://overclocking.dk/img/users/34531_05.jpg
mmmmmmm.... I like it!!
:D
JacobHansen
11-07-2004, 12:27 PM
Hehe . Next week ill post some more pics of the final tube..
quintus
11-07-2004, 01:07 PM
do u guys cover the top of the tube when dice or ln2 is over? Seems logic to cover it so warmer air doesnt get in and the temperatue of the coper will not rise from air and cpu but just cpu! Never played with dice or ln2 but my i might in the future!
gl hf
craig588
11-07-2004, 01:11 PM
When you run out of Dice or LN2 its time to shut down, the tube will only hold the temps for 30 seconds, if even that long when the CPU is under load without anything getting added to the tube.
what's the height of the tubes you guys are using? 10" or less?
JacobHansen
11-08-2004, 12:12 AM
My old tube is about 30 cm from top => Bottom.. This new one is only going to be about 20 cm. But it has a great mass.
Charlie, do you think is should put the two pieces of cubber together to one piece. ? Like this?..
charlie
11-08-2004, 12:42 AM
My old tube is about 30 cm from top => Bottom.. This new one is only going to be about 20 cm. But it has a great mass.
Charlie, do you think is should put the two pieces of cubber together to one piece. ? Like this?..
hmmmm..... fro ln2, yes... DI, no.
JacobHansen
11-08-2004, 02:05 AM
Then ill make 2 containers. With 4 pieces of cobber :)
Resently i found a good free supplier of cobber . Really nice when he cuts it, and give the edges a nice finish.. ;)
LardArse
11-08-2004, 03:25 AM
Free supplier... what kinda service did you have to offer him in return?? :p:
Lookin good... Waiting some LN2 numbers from the Dannish :)
JacobHansen
11-08-2004, 03:58 AM
Hehe LOL LardArse..
A friend of mine is president at Welding plant here in DK.. Thats the closest word i know of in ENG.. :) He told me, :"your are cracy.. I like it.. What do you need?"
and btw you should ..
Charlie, can u explaine why the base has to be more massive with ln2 and not DI.. I thought it was the other way around?
JacobHansen
11-08-2004, 04:00 AM
Charlie.. DOH... You just did in your first post. : )) Silly me..! :stick: