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Please Help with info on new loop.

post #1 of 14
Thread Starter 
I’ve been into water-cooling for a while now but don’t understand many technical aspects of its parts. Like the heat dissipation of the radiator and the flow for the pump through all the parts.

Currently my build consist of a:
Intel D 805 with a Swiftech GTZ water block.
A Swiftech MCP-655 pump.
I think it’s a Danger Den Black Ice Xtreme II dual 120mm rad.
½” tubing.
Swiftech MCRES Micro Rev. 2 reservoir.

I am in the process of putting together a new build. Here’s what I’m planning. I7-870 over clocked to 3.6 or 4 daily. ASUS Maximus III formula. Dual ATI 5770’s maybe oc’d.

Ok for my CPU I was planning on reusing the GTZ with the optional 1156 adapter. Acceptable or no??

I have the EK full motherboard water block for the MIIIF.

I have 2x EK 5770 full cover water blocks.

When the project is done I might end up with 4 separate reservoirs in the loop depending on if the pump with work with that. This part is still in the air.

I think I might switch to 3/8” tubing or might leave it 1/2” till after the CPU then switch to 3/8”. I’m also not sure on this.

Now here are my questions. I’m thinking of getting an XPSC RX360. Will this one 360 dissipate enough heat to keep my cpu, motherboard and gpu’s at an ok level? Or should I use the dual 120 in conjunction or just opt out for the XSPC RX480?

Also will my pump flow enough for all this? Or should I plan more for a Dual loop setup and just get another MCP-655? Please let me know if you need for information about anything or the reservoirs.

The case is not a factor because I’m building a custom acrylic tech station.

Thanks so much for everyone’s time and thoughts about this.
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post #2 of 14
first of all, you only need 1 res, and i recommend 2 pumps because even with a low restriction loops you get an increased flow (i have 2 pumps for a triple rad, double rad, ek supreme hf, and 5870 WB) i could easily have used 1 pump for my setup but went for the 2 for the increase in flow. don't change tubing sizes, either go all 1/2" ID and compression fittings or 7/16" ID tubing with 1/2" barbs (very nice and snug fit) and a good way to get 2 pumps into that loop is by having a res that is a pump/res combo and then having another somewhere else in the loop. the swiftech gtz block is a decent block, might want to check out the xspc rasa (second best block out for a great price). the xspc rx360 is one of the best radiators for low noise applications. i would put 2 pumps in 1 longer loop since having 2 loops give little to no gain in temps. 1 rx360 should be able to handle everything you want to cool but not very comfortably, i would say spring for the 2nd rx240 rad
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post #3 of 14
Thread Starter 
The Possible 4 reservoirs are because of the design for the tech station. I could do one but would like to have the four pillars separating the two levels each be a separate res. Thanks for your suggestions. So you think the one mcp655 won’t be enough for my loop?
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post #4 of 14
The MCP 655 will be enough for that loop, don't go dual pumps it's a waste of money.

Also, if you do run 4 reservoirs you will have to run them in parallel, because if you run them in series your loop will not function correctly.
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post #5 of 14
Thread Starter 
Thank you Charlie... That’s what I was wondering. But I'm having a bit of trouble picturing how I would accomplish running the 4 reservoirs in parallel.
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post #6 of 14
Use two 4 way splitters. Like this:


Pump
V
Loop Components (rads, blocks etc)
V
4 way flow splitter
V V V V
R R R R
E E E E
S S S S
4 way flow splitter
V
pump

I don't know if that makes any sense to you.
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post #7 of 14
I am still not following how you end up with 4 reservoirs or why you would want 4. A single res feeding the pump and a single loop would cover your needs.

In any case, to run multiple res's regardless of parallel or serial off a single pump is a matter of plumbing. In a typical loop the pump is gravity fed from the res and pushes the water through all the blocks and rads before flowing back into the res. Any air trapped in the loop releases in the lower pressure of the res and floats to the top increasing the efficiency of the entire loop.

What Charlie is talking about is that since there is an air pocket at the top of the res, running them in serial means that you get pressure drop as it passes from one to the next since the air in the top can compress dissipating some pressure. However, since the loop will be closed, if there is enough liquid in the last res before the pump, it should cause a vacuum and pull water from the other res's but this would probably impact the performance of the pump since it is now pulling and pushing. This is unless you have them vertiacally stacked so one gravity feeds the next.

If you run them in parallel then they all fill up and all leverage gravity to feed the pump.

Finally, I want to make sure you realize that increasing the volume of fluid has no impact on cooling performance. A 120ml res vs. a 1000ml res only benefit is that you have to top it off less frequently. All the fluid in a loop will equalize in temp after a short time of applying heat. More fluid will take longer, but will still equalize over time. So you get no cooling benefit from 4 res vs. 1.

Hope that helps.
post #8 of 14
Thread Starter 
Charlie… I do actually understand what you’re describing better. Thank you.

RatDog… Thanks for the better explanations. Your explanation does help out actually. I’m inserting a picture of the very rough idea I had for the main portion of a tech station I’m thinking of building. This isn’t set in stone how I will do it but just to give you an idea why I came up with 4 reservoirs. It’s not for the purpose of volume but for just the fact of making each corner a functioning reservoir. The more I think of it the more I don’t think I can make it work.

[IMG=http://img202.imageshack.us/img202/9242/techstation.jpg][/IMG]


Edited by Platinum8317 - 12/28/10 at 7:30pm
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post #9 of 14
Your image link is broken.

I wasn't saying it was impossible, just that it wouldn't provide any benefit and could actually decrease performance depending on setup as Charlie was alluding too.
post #10 of 14
Thread Starter 
fixed link.
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