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post #11 of 206 (permalink) Old 08-08-2011, 10:05 AM - Thread Starter
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Dry ice is so cheap... $15 for ~four hours of entertainment. Worth it to me smile.gif

Quote:
Originally Posted by Moparman;14507596 
Nice thread bass. One thing i would put out there would be to start your first runs on a system that you dont need to run 24/7. Bass an myself for sure use our everyday rigs for Dry ice an LN2 use. I found out the hard way at the overclockers event in ST.Louis that your 24/7 rig is a bad one to start with. We killed my mobo. Ln2 an Dice is very fun to play with. So Good luck an have fun guys.

I still use my 24/7 system as my benching system. It would have been fine if I didn't kill my motherboard mad.gif

Best way is to start cheap!
Quote:
Originally Posted by Alatar;14507690 
How good is the LN2-V2 actually? I've heard some bad things about the original version but I'm not quite sure if the V2 improved on the flaws of the original... Is the V2 heavy enough etc.?

I've been looking to order a pot from SF3D, but I'm not quite sure if it's worth the extra ~70€ I would have to pay over the koolance pot. I would like to buy a new one (don't really like buying stuff used) but I'm just not quite sure since I don't have any previous experience...

Anyways thanks for the good read!

The only downside to the V2 is it's lack of mass. With copper being so expensive... you'll have to pay more for a pot with more mass. The SF3D pot is used by tons of the top guys. If you think you'll be in this for a while and have the budget, I'd go that way.

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post #12 of 206 (permalink) Old 08-08-2011, 10:13 AM
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Quote:
Originally Posted by xxbassplayerxx;14507698 
The only downside to the V2 is it's lack of mass. With copper being so expensive... you'll have to pay more for a pot with more mass. The SF3D pot is used by tons of the top guys. If you think you'll be in this for a while and have the budget, I'd go that way.

Yeah that's what I was thinking. I'll probably go with the SF3D pot when I have the time, budget really isn't an issue. Only thing I'm worried about is how much I'm going to be using it. Lots I hope smile.gif

Anyways thanks for the great guide again! cheers.gif


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post #13 of 206 (permalink) Old 08-08-2011, 10:31 AM - Thread Starter
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I think I'll be upgrading my pot in the next few weeks... Gotta see how much Vince brings the new F1 EE in at.

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post #14 of 206 (permalink) Old 08-08-2011, 10:35 AM
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oh i have another question. when it comes time to doing the dice run should i start the pc up and log into bios then throw the dry ice in?



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post #15 of 206 (permalink) Old 08-08-2011, 10:38 AM - Thread Starter
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Yup. A CPU pot will actually hold load pretty well without anything in it. It will definitely keep heating up, but I'd say it takes about ~15 minutes for mine to get to +60°C when idling in Windows and the like. I always boot into the BIOS and then start dropping temperatures.

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post #16 of 206 (permalink) Old 08-08-2011, 10:43 AM
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what happens if you dont boot into bios then add the dry ice? It wont boot right? Because its too cold?



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post #17 of 206 (permalink) Old 08-08-2011, 10:52 AM - Thread Starter
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There are two main issues that make this hobby a bit more interesting.

First, the cold bug (CB). This is a temperature at which your processor stops working. Most Intel chips have these but they're usually in the range of LN2 and not dice... except with SB which has a CB anywhere from -15°C all the way to around -70°C. It varies from chip to chip. Most recent AMD chips do not have one of these. That means with LN2 you can fill the pot and let it drop all the way down to -180°C.

The second is the cold boot bug. This is a temperature below which a processor will not boot. For example, my last 970 wouldn't boot if it was colder than -142°C. However, once in Windows, it worked until around -175°C, at which point it would hit its CB and stop functioning.


With the exception of Sandy Bridge, these aren't things you have to worry about when using dry ice.

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post #18 of 206 (permalink) Old 08-08-2011, 11:37 AM
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oh do you put the probe sammiched in between the cpu and pot? I also have seen alot of people put ALOT of thermal paste on the cpu. Is that needed? So i should be fine with the X3 720 BE



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post #19 of 206 (permalink) Old 08-08-2011, 11:42 AM - Thread Starter
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Many pots have a hole drilled in the base for the probe. Mine has a slight indentation that I tape the probe to on the side of the base, right next to the processor. Thermal paste amounts for subzero are pretty similar to any other cooling. You don't need much at all, just enough to create a thin layer. I use the line down the center technique and it seems to work pretty well.

That AMD chip won't have a cold bug and should be a treat frozen.

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post #20 of 206 (permalink) Old 08-08-2011, 12:06 PM
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i cant seem to find a thermometer that can read lower than -50C for under $50. I found this [ame="http://www.amazon.com/Cole-Parmer-Workhorse-Thermocouple-Thermometer-Type-K/dp/B003NV5OJA/ref=pd_sbs_indust_1"]Amazon.com: Cole-Parmer Workhorse Thermocouple Thermometer Type-K: Industrial & Scientific[/ame]



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