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First successful dry ice run (with no pot!)

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a b à CPUs
a b K Overclocking
April 25, 2010 3:59:00 PM

mattidallama and I just completed our first run with DICE. We used his old Intel e5200 and MSI P43-Neo3-F 1.1. We got it to 4.3GHz at like 1.55v, but the board wouldn't boot above 343MHz FSB, no matter how cold it was (chunks of DICE sitting on top of it) or how much voltage we gave it (1.7v).

The run started out horribly. We had gotten the DICE from Publix and some pizza beforehand and were all set, but then, upon turning on the computer and booting Windows, it bitched about needing to be activated. :o  So, 10 minutes later, I finally got off the phone and we could start benching. We started off with a crappy PSU just to make sure the condensation wouldn't do anything to the plug, which was really really close to the edge of the butterfly (the cooler we used, a ZEROtherm BTF-95). And we had to use a stick of Matt's good RAM, as we either had DDR2-400, DDR2-800, or DDR2-1066, and the 400 wouldn't give us any kind of good FSB. So we started with the 800, and worked our way up to the 1066 when we realized that the mobo LIED when it said it was setting it to 800 (usually set it anywhere between 1050 and 1200!!).

Anyways, the pics will start here. I've resized them all to 800x600, and they are pretty small file sizes, so you guys shouldn't have to worry about load times. And some of the pictures are fuzzy, but I was taking them from my Droid, so bear with me!

This is the board after we finished insulating it. Used roughly 3 moldable erasers.


Here, we're getting ready to start with the DICE. I know, we're ghetto!


This one's a bit dark, but you can still see what's going on. We put DICE on top of the NB (froze it solid) and DICE up under the butterfly, right on the heatpipes, and on the top so that the cold would flow out over the fins (if any heat could manage to get up those pipes!).


Here's a better pic. The butterfly is beginning to ice over.


We found the vCore limit for the board is actually 2.1v, so we went ahead and set it to 1.8 and let her rip!


A blast shield, lol. The DICE was making all kinds of weird noises when it touched the metal, so we didn't know what was gonna happen.


DICE infused Mountain Dew is a bad choice, Matt!


The butterfly is really starting to freeze now. Core temps are somewhere around -8C.


Another dark one. We put a huge chunk of DICE directly on the bottom now. Temps started dropping, hitting around -20.


The northbridge ATE UP some DICE. It went through it about twice as fast as the CPU did.
a b à CPUs
a b K Overclocking
April 25, 2010 4:04:42 PM

This is when we started with the better RAM. We just said "screw it" and put huge chunks on the heatsinks!


This is when we tried for the lowest temperature reading. The butterfly is nearly completely frozen. Temp bottomed out at -49C, with the DICE being -56.4C.


These are our tools of the trade! Had to get that DICE block broken up somehow! (an 8 lb. block from Publix)


One last try for -50C!


We didn't hit it, so we started playing with the last bits of DICE.








CPU-z validation: http://valid.canardpc.com/show_oc.php?id=1150941
That wasn't the voltage that we finally settled on, though. We got it to do that same speed at 1.5v.

This is the coldest we were able to get it: -48C. For some reason, SpeedFan wasn't reporting numbers in the right place. I don't even know where it thinks the core was, but it definitely wasn't anywhere near +47C!!


And this was the best SuperPi Mod run we could get: 13.343 seconds.
a b à CPUs
a b K Overclocking
April 25, 2010 4:06:26 PM

On Wednesday we'll get our custom pots from overshocked in. He made us two CPU pots and he's loaning us a NB pot.

We've also got a DFI P35 LanParty board and a Celeron 431 on the way, so we're hoping to get some better numbers!
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a b à CPUs
a b K Overclocking
April 25, 2010 7:16:48 PM

jedimasterben said:
On Wednesday we'll get our custom pots from overshocked in. He made us two CPU pots and he's loaning us a NB pot.

We've also got a DFI P35 LanParty board and a Celeron 431 on the way, so we're hoping to get some better numbers!

MUCH better in all respects, both the pot and board.

That is definitely a first for a Dice run, a couch run :D 
a b à CPUs
a b K Overclocking
April 25, 2010 8:10:34 PM

I freakin hate that couch. I was kinda hoping that it would catch on fire, or freeze and shatter into a billion billion pieces.

We can't wait til we get the pots. A good friend of mine said we can have as much liquid nitrogen as we want, too, so we may do some runs with that if we can insulate everything properly. This is our first time overclocking on anything other than air!
a b à CPUs
a b K Overclocking
April 25, 2010 9:04:29 PM

jedimasterben said:
A good friend of mine said we can have as much liquid nitrogen as we want

:o  That sounds GREAT, let us know how you make out.
a b à CPUs
a b K Overclocking
April 26, 2010 12:01:35 AM

Oh, I definitely will. I've got a thread about it and my next idea (water colling for my main system, but with a garden pump and a 5 gallon water jug) over at Frozentec that I haven't brought over to Tom's just yet. Its got a bunch of ideas and suggestions on it already! I can't wait to get it all set up!
April 26, 2010 2:02:55 AM

Well there ya go....the how do I keep my processor cool riddle has been solved (overkill if you will?). Now we just need chips that can hold the voltages...
a b à CPUs
a b K Overclocking
April 26, 2010 2:06:55 AM

Psh, we've got 'em! This PDC took 1.8v like it was nothing. I've seen recent chips up to 2v!
!