MrLau

The only reason water cooling will dump more heat into the room is because of the extra power draw from the pump, which will often be around 10-30 watt. It has nothing to do with transferring heat faster or anything, the CPU and GPU will use almost exactly the same power, they will probably use slightly less due to being more efficient at lower temperatures, but I don't believe that will make up for the power draw of the pump, I however haven't tested it or looked into it.

The only reason water cooling will dump more heat into the room is because of the extra power draw from the pump, which will often be around 10-30 watt. It has nothing to do with transferring heat faster or anything, the CPU and GPU will use almost exactly the same power, they will probably use slightly less due to being more efficient at lower temperatures, but I don't believe that will make up for the power draw of the pump, I however haven't tested it or looked into it.

Have you  watched Applied Science video on his freeze drying, if not they are worth checking out
 
 
However I think you will need some form of cold trap, which might require a pretty expensive dual stage pump to keep cold, if you don't want to use dry ice or liquid nitrogen.
The computer control will be pretty easy compared to all the other stuff you have to make. So I think your focus should be on getting it to work manually first, and then automate it later.

Have you  watched Applied Science video on his freeze drying, if not they are worth checking out
 
 
However I think you will need some form of cold trap, which might require a pretty expensive dual stage pump to keep cold, if you don't want to use dry ice or liquid nitrogen.
The computer control will be pretty easy compared to all the other stuff you have to make. So I think your focus should be on getting it to work manually first, and then automate it later.

You might be able to use silica gel to dry the air instead of a cold trap, it will of course have to be dried out when they have absorbed all it can, but it could be a much cheaper alternative if you could make it work.

To qualify for bigadv units you have too run the linux client, which doesn't support GPU folding. If you don't want the bigadv units then you can just run windows and then fold on both the CPU and GPU

A 2p or 4p build would be best, the reason for this is that once you have more than 16 real cores you qualify for bigadv units with gives a lot of points. There is a catch though you have to run the linux client, which also means you can't do GPU folding on the same machine. For better details I would suggest you talk to whaler_99 or take a look at some of the 4p system buildlogs.