How much water need for passive cooling setup?

[Keso.X]

Hi, I'm planning on watercool my two systems. The thing is it has to be extremely silent preferably noiseless, as I will sleep next to them (well not with my head on the case but in the same room ). My idea is to use two big reservoirs with built in heatsinks and passively cool them both, maybe in one loop. Do you guys think its possible? How much water/big reservoirs do I need to get descent temps?

System #1 Game machine:
Asus P5B deluxe
Intel Core 2 Duo e6600 @ 2.4 GHz
2 GB RAM
GeForce 8800GTX
1 HDD
1 DVD

System #2 Server / HTPC:
Gigabyte GA-EP35C-DS3R
Intel Core 2 Duo E8400 @ 3 GHz
4 GB RAM
GeForce 8600gt Passive
3 HDD
1 DVD

**EDIT**
Just a simple sketch on what my idea:

 

[ekuest]

i dont think it is worth it to water cool for noise suppression unless you have a lot of heat to get rid of like in overclocking and running sli/xfire. how are your case temps? if theyre not too bad you could get a pair of these (if you have room of course, if not something smaller might work just fine.) and probably be ok. i know youre air cooling both video cards so thats putting off some heat for sure. just see if your case temps will accommodate air cooling the cpus before you commit to water cooling.

 

[Blazestorm]

Honestly you could probably undervolt fan's enough to be as quiet as watercooling... pump's aren't silent either...

 

[soulesschild]

Honestly you could probably undervolt fan's enough to be as quiet as watercooling... pump's aren't silent either...

This.

 

[guitarslingerchris]

Honestly you could probably undervolt fan's enough to be as quiet as watercooling... pump's aren't silent either...

This. Also worth mentioning super quiet fans like Scythes, etc.

 

[undertheradar]

http://www.hardforum.com/showthread.php?t=1399592

^^^ lots of finned pipe...lol. Lots of it. Then you can get DEAD SILENCE. Seriously, the loudest thing on my computer is the optical drive when it spools up. I can hear my HDD heads moving back and forth... otherwise, not a fan in the case but the enermax, and that thing is pretty dead silent anyways.

 

[Keso.X]

Honestly you could probably undervolt fan's enough to be as quiet as watercooling... pump's aren't silent either...

I also thought of such a solution but I was not sure if the air throughput would be sufficient because the computers will be rack mounted.
Is it possible to calculate how much air needed to cool the system?

 

[Keso.X]

http://www.hardforum.com/showthread.php?t=1399592

^^^ lots of finned pipe...lol. Lots of it. Then you can get DEAD SILENCE. Seriously, the loudest thing on my computer is the optical drive when it spools up. I can hear my HDD heads moving back and forth... otherwise, not a fan in the case but the enermax, and that thing is pretty dead silent anyways.

Damn cool solution. I knew I seen someone with the same idea here in the Forum. How much water do you use to fill the system?

 

[undertheradar]

About 3.5 gallons. The starfin pipe has an ID of 1", and there are 6 of them that are 6' tall. The rez is 2" clear PVC that is about 7' tall. The piping and everything else, well... it adds up.

Having built that, I now know a little more and can say that a person could get away with something that is about 1/2 the size. If you used only 3' tall sections of that pipe (6pcs still), then you would likely only need about a 4' tall rez as well, and I think you would end up with about 2 gallons or actual fluid volume. My setup is enough to shed about 2000 watts of heat... way overkill for most. I want to be able to hook up 2 computers on the same system though... thats why the radiator is so huge.