Well just a thought... my bench party I had a 180L from airgas (pressurized at 22psi - to dispense liquid) and from static loss I lost about 30L over the weekend. So there's really no way it could last you more than a week, even if you didnt use it. I asked airgas about it and they said pressurized dewars arent insulated as well. Not to mention many an airgas dewar is somewhat abused, and may not have full vaccum.
Also remember that they do not include a transfer hose as part of the rental. I had to buy one (got a nice 4 footer) or else the dewar was useless to us. I got mine form the guy at airgas ($250 list he gave it to me for $120).
Remember, you can haggle with them over liter costs and such also. Or you can do what I did and say that if they "sponsor" your LN2 for low cost you will give them publicity.
Quote:
Originally Posted by Chuchnit
Well you can go as low as -196c max on ln2, but most chips except PHII can't take it. The few i7 that can are reported to get funny with the IMC. Honestly a cascade is cold enough for i7, but you don't get the temp control like with ln2. That is what makes it king. Got a CPU that cold bugs at -40? No problem, use ln2. Cold bug at -62c? Use ln2 cause dice don't give temp control. Get it?
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i7 has a 3rd coldbug we have to contend with and its the IMC coldbug. But many of the very best i7's need to run -120° and some much lower than even that.
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