computerpro3
05-26-2004, 04:23 AM
Hi guys...
Well, I saw a video of one of what I think was either MAcci's or Charlie's ancient dry ice adventures (looked like an rdram machine:D ) and it certainly got my attention. Too poor for phase change right now, and don't know how to handle ln2, so dry ice seems like a good middle ground. I want to basically give my chip a shot of NOS so to speak for some quick benchies. I want to see how high my 3.0C @ 4ghz on plain room temp water will go.
So now some questions.
1. What is the best method of benching with it? I understand you have to construct a copper tube with lots of copper mass at the bottom to hold temps, insulate the tube and componets, fill it with dry ice. But then in the video, the person poured a liquid over the dry ice to get the reaction really going. What is the best liquid to pour on?
2. How long can you keep benching on average for every pound/kg/whatever of dry ice?
3. How much dry ice should I get if I plan on like an hour of benching at a time?
4. I am in CT. Anyone know a good place to get it?
5. Are there any particular things I should do to enhance the copper tube design?
6. Exactly how cold does it get if done right. Is expecting 4.4-4.5ghz too much (i am willing to go to 1.8v and beyond on my chip...)
Thanks so much in advance, guys. Hope to begin building the tube with a friend soon....
Well, I saw a video of one of what I think was either MAcci's or Charlie's ancient dry ice adventures (looked like an rdram machine:D ) and it certainly got my attention. Too poor for phase change right now, and don't know how to handle ln2, so dry ice seems like a good middle ground. I want to basically give my chip a shot of NOS so to speak for some quick benchies. I want to see how high my 3.0C @ 4ghz on plain room temp water will go.
So now some questions.
1. What is the best method of benching with it? I understand you have to construct a copper tube with lots of copper mass at the bottom to hold temps, insulate the tube and componets, fill it with dry ice. But then in the video, the person poured a liquid over the dry ice to get the reaction really going. What is the best liquid to pour on?
2. How long can you keep benching on average for every pound/kg/whatever of dry ice?
3. How much dry ice should I get if I plan on like an hour of benching at a time?
4. I am in CT. Anyone know a good place to get it?
5. Are there any particular things I should do to enhance the copper tube design?
6. Exactly how cold does it get if done right. Is expecting 4.4-4.5ghz too much (i am willing to go to 1.8v and beyond on my chip...)
Thanks so much in advance, guys. Hope to begin building the tube with a friend soon....