Dry Ice Cooling...

Discuss cases, PSUs, and various cooling techniques in here.
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HONkUS
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Post by HONkUS »

I second that I want to see the results I was excited about your cross-dressing-pipe-bombing exploits!
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Apoptosis
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Post by Apoptosis »

Actually it's back out sitting on my desk... When I get back from CES it's going to be put to the test... just been so busy it's not funny. It was one of those projects that was fun to do then a stack of 40+ products came in to review and I started working on a new backend and frontend for legit reviews... The new site design will be launched later this month and once it and CES are over things should be back to a normal pace to where I can do stuff on the side like this again.
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Post by zparker »

HONkUS wrote:I second that I want to see the results I was excited about your cross-dressing-pipe-bombing exploits!
LMFAO you should put some big hairy tennis balls painted black towards the bottom just for gag appeal.

I'm i sick bastard sometimes, espically when i am sleep deproved :axe:
EVGA nForce 680i SLI board, XFX GeForce 7950GT@641/1244, Corsair XMS2 2GB DDR2 800 TWIN2X2048-6400C4 (4-4-4-12) 2.1v, Core 2 Duo E6400 (3.0ghz) at 56c max stock cooling, 2 Seagate Barracuda sata 3.0gb 320gb not raid yet and 550watts

old board at 3.2 stock videocard settings / new board at 3.0 oc video card / 3.2 & oc video card

3dmark 2003 score= 22851 / 25262 / 25767
3dmark 2005 score= 10220 / 11764 / not yet
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Apoptosis
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Post by Apoptosis »

Didn't Feel like benchmarking anything today, so I figured I'd finish my dry ice project from last year...

I found a place that sold Dry Ice less than 5 miles away from my house for $0.75 a pound in blocks... I bought a small three pound block for a couple bucks and was ready to go...
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I made some changes to the board since I last posted here... Added a Neoprene square on the bottom of the board...
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and some more Neoprene around the CPU and adjoining areas...
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I then mounted up the Dry Ice Tube that I made from last year and cranked it down the best I could. I used arctic silver Lumiere as the thermal interface material...
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I then mounted three 120mm fans that I had sitting around to keep air blowing across the board... Added the dry ice chunks and some pure acetone to help get the most out of the dry ice...
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Once I fired it up I headed into the BIOS and saw that it was sitting at -26C, which is nice and cold...
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I was able to overclock the AMD 3500+ Socket 939 processor farther than I have ever been able to go (ran out of DICE at 3.25GHz) and while I have screenshots from the desktop they will have to wait because I left them on the hard drive and the motherboard is thawing out right now. No visible condensation was on the motherboard and everything was a complete success - thank God as this was my first time with DICE and have never even seen anyone else do it in person... All I know is that I needed to have more dry ice ready as it consumes if faster than I thought.... more to come
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HONkUS
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Post by HONkUS »

make sure you do it in an open area with plenty of ventilation! the gas it gives off can asphyxiate you!
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Post by Apoptosis »

crap and here I was huffing it...
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Post by Apoptosis »

k... Gave it a second shot and was able to top my previous overclock...

Here is stock with the Zalman CNPS9700 NT Heat Sink:

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Here is the max overclock with the the Zalman CNPS9700 NT Heat Sink:

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Here is the overclock with the Dry Ice Cooler:

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I stopped after a little bit because the board was getting pretty frozen!

Notice the temperature went from 30C at 2.9GHz with air cooling to -49C at 3.4Ghzwith the Dry Ice cooling at the highest possible voltages! The most I could get out of it on air cooling was 265MHz and now I'm hitting 312MHz... A nice 500MHz boost thanks to DICE!!!! I'll give it a bit more once it thaws out again.
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dicecca112
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Post by dicecca112 »

#4 3500on hwbot, wtg Nate
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Apoptosis
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Post by Apoptosis »

oh it will be number 3... it's got more left it in... 325MHz had a BSOD and I didn't try anything else over 312MHz... ;)
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Post by Apoptosis »

On the second run I used a dremel tool to make the hole on the top plate wider... This allowed me to put bigger chunks of dry ice into the tube...
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right off the bat the temperatures were lower (-32C from the start now and before was -26C) and ended up dropping to -49C on the CPU. Much better as I now knew to put more Acetone in and more dry ice...
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Post by bubba »

Thats nuts, cool, but nuts.
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DMB2000uk
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Post by DMB2000uk »

Wow, nice one. This must be fun to do :)

Now keep at it with other not so popular hardware for overclocking and get us all some more hwbot points :P

Dan
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stopthekilling77
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Post by stopthekilling77 »

:yikes: :supz:


that is awesome, i just took the time to read this whole thread and i must agree with Bubba
Thats nuts, cool, but nuts.

awesome stuff
Cyberpower generic case
B450M PRO-VDH MAX
Ryzen 5 3600 w/PBO/OC
CM Hyper 212 EVO push/pull
Corsair VENGEANCE LPX 16GB (2 x 8GB) DDR4-3600 CL16
MSI RTX 3060 Ti Ventus 3X 8G OC LHR
Samsung 970 EVO Plus 500GB
6GB Seagate HDD
EVGA 650BQ 650W PSU
ASUS VE278 27" monitor, Dell E2216HV (vertical)
Logitech Z533 2.1 Speakers, G935 7.1 or G435 headset
MS LXM-00001 keyboard
Razer Deathadder Elite, XBOX One Lunar Shift controller

I've come a long way from my original Core2Duo E6750 build y'all! :supz:
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dgood
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Post by dgood »

Impressive. Someone will overtake me it seems in hw bot points especially since i'm running out of hardware to test. and I don't have the tools to do more than air cooling. Its only right that someone here should over take me lol. That is some cool stuff. They do sell dry ice just about a block from here. Don't think I'll be playing with it though.
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Dragon_Cooler
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Post by Dragon_Cooler »

holllllly crap that is cooooool!!!!!!!!!!!!!!!!!!!!!!!!!!!!! :rolleyes:


I would love to see that at quakecon if and when they have overclocking contests!!! LOL
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Post by Apoptosis »

I'm really happy with the results and it was pretty damn cheap too...

2 x #6-32 x 12" All Thread Rod - $0.98
1 x #6-32 Wing Nuts - $0.98
1 x Blank Light Cover - $0.76
2 x Neoprene Pads - $1.75
Adhesive Thermal Tape - $6.77
2" Copper Cap - $2.49
Silver Solder - $10.00
11" 2" Copper Pipe - FREE

Total Dry Ice Tube Cost -- $27.21

Operational Costs - 1lb dry ice = $0.75

For $27.21 and some thought and part searching I have made a dry ice tube that get down to around -50C, which is pretty nice if you ask me. If anyone wants to try extreme overclocking this is the way to go... Beats the crap out of any water cooling kit and will allow you to be one of the best overclockers out there with the right supporting hardware. I started out with the goal to keep everything under $50 and seemed to come in well under my goal... Now I'm thinking on a way to make it mount onto Socket AM2 platforms and LGA775 platforms!
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dicecca112
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Post by dicecca112 »

nate is that a 7900gt in your pick? Looks exactly like mine
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dgood
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Post by dgood »

how often do you have to replace the dry ice?
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Apoptosis
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Post by Apoptosis »

pretty often... more often with this tube because there isn't much weight to it... Having a one piece solid copper tube would lead to better thermals and less dry ice consumption, but hey for $30 I'm not complaining. I bought 2.5 pounds and it lasted I'd say a good two hours, which is plenty. The board started to freeze and I shut down after about 45mins each time to let it thaw out. This is not something you'd want to do for long periods of time (yes, I know they have made automated DICE machines now).
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Post by Dragon_Cooler »

Well that should be long enough to run some kind of bench marking program!! right!
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