I have plenty of acetone, but it never went below -72 when I tried last time. Been too busy to try again.

Scarlet-Tech
I have plenty of acetone, but it never went below -72 when I tried last time. Been too busy to try again.

You are Correct because -72C equals about -100F!
 
In my Previous pic of my Digital Thermometer it is set for reading temps at Fahrenheit, So the reading it shows at -99.4F is really about -72C.
 
That's Why when you see Benching Rigs using LN2 at -196C it is REALLY at -321F!

Is it fine to use dielectric grease to coat the board (and cover the ram & fill the slots)? I ran out of usable LET when I was trying to add more layers and I have a bunch of grease around.

tucker147
Is it fine to use dielectric grease to coat the board (and cover the ram & fill the slots)? I ran out of usable LET when I was trying to add more layers and I have a bunch of grease around.

You can use whatever type of insulation methods that you know will work.
 
Others will tell you There are Many ways to condensate-proof MB's, Graphics Cards, etc...and they DO work well, But Since 2008, I have used ONLY Petroleum Jelly on All my Sub-Zero Overclocking/Benching Rigs Now and in the Past.
 
My Method is using Petroleum Jelly and apply it on Both Sides of the MB Area you think will get condensation and IN the CPU Socket, Then use a Heat Gun/Blow Dryer to cause the PJ to become semi-Liquid and FLOW into and Underneath all the areas of the MB, Especially under the Memory Slots, CPU Socket and then AFTER I install the CPU and lock it in place, I heat it again to ensure good electrical contact between them.
 
Look at my Post #10625 on this Link:
 
http://forums.evga.com/Get-It-Colder-II-m508-p355.aspx

Thanks, I've got it all finished up now. Though I didn't use as much grease in the socket as you did in the pics, but I had a little scare on boot it kept giving me post code FF. I cleaned up the cpu and socket a bit and it ran fine again.
I couldn't get this stuff to melt at all with a hairdryer but I don't think I'll run into any condensation problems, I completely covered the top half of the board front and back with the grease.

tucker147
Thanks, I've got it all finished up now. Though I didn't use as much grease in the socket as you did in the pics, but I had a little scare on boot it kept giving me post code FF. I cleaned up the cpu and socket a bit and it ran fine again.
I couldn't get this stuff to melt at all with a hairdryer but I don't think I'll run into any condensation problems, I completely covered the top half of the board front and back with the grease.

Yeah, Dielectric Grease won't melt and flow like PJ does, But still Glad you got everything worked out OK.
You'll more than likely be able to spot any condensation problem areas that may show up when you start going sub-zero with the DICE/Acetone Cooling.

Hit sub-zero temps for the first time this morning. 


 

Congrats, I assume that BIOS reading is still with just Ice/water, But at least Now that you had a "taste" of sub-zero cooling you will never look back!
 
Can't wait until you try a small amount of DICE for the first time. You could even use some 91% rubbing alcohol instead of Acetone just to start off, But the sub-zero temps will be somewhat Higher (Around -51C/59F).
 

Yeah, that was with just ice/water, not bad though. I'll probably hold off on getting any DICE until my LGA775 stuff comes in so then I can try for 5.5-6GHz with a couple P4 631's.

Alright, I've gotten all my S775 stuff yesterday, did a bit of testing once I got it set up.
P4 631 @ 4.5GHz 1.43V This particular chip can do 5GHz easy on air apparently so I'll keep trying for that to practice.
 
System, P5Q-E with a coat of LET and volt modded & 2x 512MB Crucial Ballistix 667MHz 3-3-3-12 @ 2.2V.

Volt mod controls,

CPU's, some Celeron's, Pentium's, Xeon's as well as a E5540 ES and a Cele D 352 that did 7GHz on another mobo, these should last me a very long time.


 
I'll be getting some DICE this weekend hopefully.