Originally Posted by Red5
Hey guys. General LN2 question, I hope this is the right spot to ask.
I've done some CPU LN2 benching previously but am soon going to be doing CPU and GPU together. I have read this requires a lot of LN2 so I have been researching renting a tank from Airgas, probably 180L.
My question is that I see they come in many different pressures (22psi, 35psi, 50psi, 230psi) and I'm not sure which would be ideal. I will be dispensing LN2 from the large tank into a 10L dewar, then to thermoses for pouring. I assume that I want the lowest pressure possible for my uses, so the 22psi but I haven't dealt with the larger tanks in the past and any advice would be great.
Also, I noticed they come in grades (food grade, medical grade) and I assume I should just get whichever option would be cheapest, is this the right thinking?
Thanks in advance!
I think CAxVIPER is making a good point. The big 180L sounds nice, but depending on how quickly you use it, a lot will go to waste. A cpu and gpu can use a lot of ln2 or not that much. It really depends on the hardware being used, how well the session is going, what benches you plan on running. It's good to have experience with the hardware, know it's limits. Then you can pretty much go straight to knocking down them scores. I used to try and run as many benches as I could during the session and I never really got good scores. When I focused on one bench only and then shut stuff down when i was content, I got good scores and had more ln2 for the next day.
I've gone through 50L, in a few hours and sometimes it's lasted me a week or two. Transferring from a big tank to a small 10L, I'd imagine a lot would go to waste and the tank sitting for long periods of time will waste a lot too.