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WC loop plans + lots of questions

post #1 of 12
Thread Starter 
This is what I have planned:


I'm beginning to regret getting an Antec 300. I did some measurements and the double 120 rad is the largest I can fit inside my case. The 300 looks so cool though! I can't part with it.

My questions:
#1 - is there an obvious better place for the radiator inside the case that I've missed?
#2 - if I put the radiator on the outside of the case, it's got to have some spacing for airflow. How to I put spacing between the case and radiator?
#3 - in the pic shown, I can't fit fans on one end of the radiator (there is also only one 140mm size grill at the top, where I have the Noctua fan), by how much would this reduce performance by?
#4 - if there are no fans on one end, is there a reason to have a double rad over a single 120mm or 140mm rad? If so, what difference would there be to an all-in-one Corsair H-series WC loop?
#5 - if I wanted to tie the 6870 into the loop, could I do it in with the cooling shown?
#6 - is it OK to put the pump at a location not on the floor of the case? Do pumps ever leak?
#7 - is it OK to mount/affix a pump upside down or sideways? Would anything happen? Leak risk? Strange behavior?
#8 - Any suggestions for different components to the loop?
#9 - For the tubing, what size should I use? I assume bigger tubing = better because of more flow. Can these components handle 1/2" ID tubing?

I'm not going for super low temps here. I just want to get the most out of the 930 while keeping things silent. I'm fine if the load temp on the CPU approaches 70C. I don't think it will though.
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post #2 of 12
Yeah, I'd definitely mount it outside the case, you can buy radiator brackets to do just that. You're going to want to have two fans on a 2x120 radiator or it's simply not worth it. The performance reduction would be, well, half of what it should be.

Having the longer radiator without any fans there basically means the water is circulating round doing nothing. Picture the water inside the radiator in your head, only half of the radiator's contents will theoretically be cooled down.

You can't put the 6870 into the loop as it is in the picture, the temperatures will be horrendous. Your only option in a restrictive case like that is to mount it outside. There simply isn't enough room.

Pumps don't leak, unless you did something wrong. You can put it wherever you want. As for sideways, I don't know. It probably won't work as well as the pump when it's flat on the case floor or in another place inside the case.

As for components, they're looking good. I'd go for an XSPC Rasa or EK Supreme HF over the XT. Granted, the Apogee looks cool but the two I mentioned perform better statistically.

You can use whatever size tubing you want. The smaller the tubing, the higher the pressure thus there aren't actually any real-world flow differences. It's down to personal preference. I just 1/2" ID 3/4" OD tubing in my loop.

tl;dr You're going to want to mount it outside, with a 360 radiator with three fans if you're going to want to cool the CPU and GPU decently. Swiftech MCR320 is a good choice. Can use any tubing you like, size doesn't matter. Loop order doesn't matter.

....hope I answered most of your questions
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post #3 of 12
you can always mount the radiator outside, not having a fan cooling it down is well.. to say it bluntly, and my apologies, a waste of time.

You can mount it outside the 120mm exhaust spot

Rad || Fan || Case

Edit:
Quote:
My questions:
#1 - is there an obvious better place for the radiator inside the case that I've missed? Mount it Outside, that way you can mount 3 fans on it to get better efficient cooling.
#2 - if I put the radiator on the outside of the case, it's got to have some spacing for airflow. How to I put spacing between the case and radiator? rad || fan || case install it on the 120mm slot, for the 2 fans, install it as fans || rad
#3 - in the pic shown, I can't fit fans on one end of the radiator (there is also only one 140mm size grill at the top, where I have the Noctua fan), by how much would this reduce performance by? Not sure about this but maybe somebody can enlighten us, if you're only using one fan, and cooling one end of the radiator, it's pretty much like having a 120mm rad i reckon **just a theory from myself hehe**
#5 - if I wanted to tie the 6870 into the loop, could I do it in with the cooling shown? With the current setup at the moment, 1 rad and only 1 part getting cooled, adding the GPU to the loop is a bad idea, but if you have 2 fans cooling the rad down, it'll be possible BUT you wont get awesome game changing temps, nothing beats another rad to help with the temps
#6 - is it OK to put the pump at a location not on the floor of the case? Do pumps ever leak? This is a personal preference, but rule of a thumb is always put the pump below the reservoir *if you're using one. every other component has a chance of leaking, it's just a matter of doing a good job, not rushing it, and maintaining your loop
#7 - is it OK to mount/affix a pump upside down or sideways? Would anything happen? Leak risk? Strange behavior? not sure about this, but i've read somewhere that there are certain orientations that you can do with the pump. Upside down being one of them. *again, maybe somebody can enlighten us
#9 - For the tubing, what size should I use? I assume bigger tubing = better because of more flow. Can these components handle 1/2" ID tubing? Personal preference really ^_^

Edited by MorbEIn - 4/29/11 at 1:05am
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post #4 of 12
Sorry for the really cluttered picture, I never took better ones with cable management...but this is when I had my Antec 300 and got around to mounting my 2x120mm inside. Quite simple actually.





Since you asked how you would mount it outside, and space it...here is how I did so.



Please ignore the poop water...and on that note, don't forget to rinse your radiator of flux very well when you get it.



In my opinion you should do the internal mount like I did, I liked that setup the best.
Get some velcro and mount the SSD's where ever it is convenient for them. If you have an optical, stick that in the top 5.25" bay and if you have a HDD get a 5.25-3.25 adapter and stick it in the bay too.




I'm sorry I didn't take the time to read the other members responses, but I'm sure they answered fine as well to your other questions.

In no particular order; as for tubing size you could use 1/2" with 1/2" barbs. Personally I am using 7/16" with 1/2" barbs because it is a tighter fit with less chance to leak, and you don't need to use clamps. I would suggest clamps for your first loop setup though.
Regarding the pump, you can't really mount it upside down, but the reason for that is when you are filling the loop you need to make sure the pump doesn't run dry. At weird angles, this is likely to happen.
If you want to add the 6870 to the loop, I would suggest adding a 120mm radiator on the inside of the rear exhaust fan. That would keep everything at good temperature, while still being able to run low noise fans.
Edited by fl0w3n - 4/29/11 at 1:38am
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post #5 of 12
Thread Starter 
Thanks everyone.

It looks like I chose a bad spot for the rad. I like the idea of putting it in place of the drive cage like what fl0w3n did, but I'll need to mod the case a bit since I think that cage is riveted. No problem.
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post #6 of 12
Quote:
Originally Posted by tom thumb 2 View Post
Thanks everyone.

It looks like I chose a bad spot for the rad. I like the idea of putting it in place of the drive cage like what fl0w3n did, but I'll need to mod the case a bit since I think that cage is riveted. No problem.
I still think it looks better on the outside.
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post #7 of 12
Thread Starter 
Quote:
I still think it looks better on the outside.
Probably better for cooling that the rad is on the outside, but the back of my case is very close to a wooden board at the back of my desk, so it's best if the rad stays inside.

The downside here is that slightly warmer air will be coming into the case. It's not really a problem though as I've got an additional fan on the side panel to pump more room temp air in.

How much juice does an OC'd i7 use anyway?
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post #8 of 12
Quote:
Originally Posted by tom thumb 2 View Post
How much juice does an OC'd i7 use anyway?
How long is a piece of string?

Depends on how much you OC, how high your volts are, your particular chip and even how warm it runs...

Plan for around 200 - 220W @ 4 - 4.2GHz, should get you into the right area.
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post #9 of 12
Thread Starter 
Quote:
Depends on how much you OC, how high your volts are, your particular chip and even how warm it runs...
Really? I thought it was linear with clock speed.

How does it's temperature affect the power it uses? I think you are mixing cause and effect. If not please explain!
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post #10 of 12
I will attempt to give a pictorial answer to the first 2 questions.

Quote:
#1 - is there an obvious better place for the radiator inside the case that I've missed?
Ans: mount the rad inside the HDD cage with UN Brackets. See pic 1 below.
UN Link:http://www.undesignsbrackets.com/products/

Quote:
#2 - if I put the radiator on the outside of the case, it's got to have some spacing for airflow. How to I put spacing between the case and radiator?
Ans: mount the rad outside to the rear of the case with a bracket system. See pic 2 below for a Koolance approach.
Koolance Link:http://www.koolance.com/water-coolin...product_id=829

Edit 1:
Quote:
#3 - in the pic shown, I can't fit fans on one end of the radiator (there is also only one 140mm size grill at the top, where I have the Noctua fan), by how much would this reduce performance by?
Ans: If you do not use a fan over a rad, the rad becomes purely passive and relies on natural ventilation for cooling. This is a fairly bad move. Given that the rad is inside the case in an area of almost zero air flow, I would say the reduction of the cooling performance of the rad is about 50%. A very substantial loss it is!


Edited by windfire - 4/29/11 at 7:37pm
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