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need help for watercooling.

post #1 of 20
Thread Starter 
Hello, my name is max.

I am building a high end water cooling rig. I have been doing some looking around at frozen-cpu.

I have chosen 4 radiators that should fit in an obsidian 800D. They are:
a) Black Ice GTX Xtreme 360 Radiator
b) Black Ice GTX Xtreme 240 Radiator x 2 (one at the bottom, one on the side)
c) Black Ice SR1 Low Air Flow Optimized 140 Radiator (in place of 140mm fan at the back)

I chose these because they were the most expensive and i am assuming they will cool the best. first question Do i have too many radiators? i will be cooling a Rampage III Extreme Mobo, Dominator 1600 RAM, an Intel i7 950 which will be overclocked alot, and two GTX 580 SLI.

Also i was thinking of using these fans, to use on my radiators. I don't like noisy fans. http://www.frozencpu.com/products/76...X8N&mv_pc=5219
They are only 1600rpm, but they seem to be giving a CFM of 69.15 at a sound level of 18db. Is the CFM what should be considered or the rpm at which the fan operates? I have read that more fins means more rpm for efficiency and vice versa. The Black Ice has alot of fins. I saw graphs that suggests i would need a 2000+rpm fan to get the most efficiency out of the many finned Black Ice, however i noticed these fans compared to a 2000 rpm fan, they both had around the same CFM. as if suggesting these are acting like a 2000 rpm fan? am i getting that right?

Also i was thinking of running the setup as follows

Resevoir --> Pump --> Rad 240 --> Rad 240 --> Rad 360

i would then split it here...

a) (Rad 360) --> CPU --> Mobo ---> Ram
b) (Rad 360) --> Rad 140 --> GTX 580(1) --> GTX 580 (2)

I would then unsplit? these or combine them and it would return to the resevoir.

How does this sound? Am i on the right track? How is my fan selection for my selected Radiators or do you experts over here recommend a better fan and rad combo? I am open to suggestion and will listen and follow obediently to get this right.

Thanks for your time, folks
Max
post #2 of 20
one question ..are you looking for quite set up or just don't care ?
Edit;start with RAD's,here;
http://skinneelabs.com/triplesv2.html
Edited by coolhandluke41 - 12/23/10 at 4:01pm
    
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post #3 of 20
You can't always equate most expensive with best.

As far as radiators go, you can get 90-95% of the performance of the most expensive radiators you can find with similar radiators at the lower end of the price spectrum. For example, you can check out one of the more popular radiator comparisons here:

In regard to your fins question, the term is FPI (fins per inch) - where higher FPI (or greater fin density) typically requires a higher RPM or greater static pressure to be effective, when compared to lower FPI radiators.

For that reason, I'd tend to recommend lower FPI radiators - which can easily accommodate various fans, reduce noise, and still perform well.


As for fans themselves, on a radiator you want high static pressure (more than a specific CFM or RPM). RPM, however, can be indicative of noise levels you're likely to experience - so that's definitely something you want to consider when making comparisons.



Your other questions are dependent upon what you're looking for in terms of price/performance/noise/ease of installation. The more details you can give the better.
post #4 of 20
At those fan speeds the XSPC RX series radiators are actually better than the GTX series. A single 480 radiator will be more than enough for your needs and modding your case to fit it is much easier than the one to fit a 240 in the bottom.

As for fans, I would get gentle typhoon AP-15s. They are 1850 RPM but because of their unique blade design much quieter than the 1500 RPM Magmas.

As for the loop order i wouldn't split the flow. Splitting the flow causes balance issues that will give you problems. Since your GPU blocks are so unrestrictive more water will flow through them than the CPU block. By simply chaining everything together you solve this issue completely. Don't worry about the heat from the components heating other components as due to the large heat capacity of water the temperature of the water after it leaves your CPU block will only be about 0.5C warmer than when it went in.

If your have any more questions don't hesitate to ask as i can expand on anything in this post if you need me too.
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post #5 of 20
Quote:
Originally Posted by charliehorse55 View Post
At those fan speeds the XSPC RX series radiators are actually better than the GTX series. A single 480 radiator will be more than enough for your needs and modding your case to fit it is much easier than the one to fit a 240 in the bottom.

As for fans, I would get gentle typhoon AP-15s. They are 1850 RPM but because of their unique blade design much quieter than the 1500 RPM Magmas.

As for the loop order i wouldn't split the flow. Splitting the flow causes balance issues that will give you problems. Since your GPU blocks are so unrestrictive more water will flow through them than the CPU block. By simply chaining everything together you solve this issue completely. Don't worry about the heat from the components heating other components as due to the large heat capacity of water the temperature of the water after it leaves your CPU block will only be about 0.5C warmer than when it went in.

If your have any more questions don't hesitate to ask as i can expand on anything in this post if you need me too.
I would't say "single 480 will be more than enough"
@OP if you go with 480+240 or 360+240 it would be a lot better(you got the room for it) and if you decide on cooling your mobo (no need to ,if you don't plan on word record clocks )you going to need good pump/s and if you end up going with high FPI RAD's,here is a fan coming near you very soon;
http://www.frozencpu.com/products/12...ml?id=GV5Ts9bh

Edit;just like charliehorse55 say single loop is all you need
Edited by coolhandluke41 - 12/23/10 at 4:54pm
    
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post #6 of 20
A single 480 with AP-15s would give him around a 9C water-air delta. While this could be improved on, it certainly isn't very bad either. Especially when you factor in how much easier it would be to mod a 480 radiator in the top compared to modding the bottom for a 240.
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post #7 of 20
Quote:
Originally Posted by charliehorse55 View Post
A single 480 with AP-15s would give him around a 9C water-air delta. While this could be improved on, it certainly isn't very bad either. Especially when you factor in how much easier it would be to mod a 480 radiator in the top compared to modding the bottom for a 240.
I got to hand it to you...you and you deltas are based on outside radiator testing ok
    
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post #8 of 20
Quote:
Originally Posted by coolhandluke41 View Post
I got to hand it to you...you and you deltas are based on outside radiator testing ok


I really don't know what you mean by "outside radiator testing". Are you implying that Skinnee Labs isn't a reputable source?
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post #9 of 20
Quote:
Originally Posted by charliehorse55 View Post


I really don't know what you mean by "outside radiator testing". Are you implying that Skinnee Labs isn't a reputable source?
no i'm saying that this deltas come from radiators being tested outside of the case,once you install radiator/s inside of the case it's a new ball game
    
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post #10 of 20
Thread Starter 
Thanks for the replies... I'll go for the XPSC RX series radiators and the typhoon fans. I'll still be doing about 3-4 rads though. Just cause.

What is the moat popular tubing? Tygon? I heard 1/2" is good flow but with an OD of 3/4" it seems kinda chunky! :/
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