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STH10 and air flow direction

post #1 of 8
Thread Starter 
I'm considering an STH10 for my first build (water cooling virgin), but I have some questions, mainly about radiator placement and airflow directions, and I'm unsure where to ask them.

My plan so far is for a silent build running a pair of Black Ice SR1 560 radiators with Cougar Vortex HDB CF-V14H fans in push pull in both the top and the bottom compartment, mounted to the side of the cases with some resulting space in between (for a total of four radiators).

Now, what I'm wondering about is how to set the airflow for maximum cooling capability under low to medium RPM conditions (700-1200 RPM).

My alternatives so far:
1 - both radiators set as intake with a single exhaust fan mounted in the front flex-bay
2 - both radiators set as exhaust with a single intake fan mounted in the front flex-bay
3 - one radiator set as intake with the other as exhaust (effectively a spaced sandwich)

My doubts about alternative 1 is that the fans on the radiators, being set to blow air in opposite directions in such close proximity, will interfere with each other and thus diminish the cooling efficiency of the radiators.

These doubts apply equally to alternative 2, where the fans will be competing for the air supplied by the lone, front-mounted intake fan and attempting to move it in opposite directions.

Alternative 3 would result in one radiator receiving preheated air expelled from the other, thus reducing the efficiency of the one not set as a direct intake.

Based on the results from this sandwich test of radiators (http://www.xtremesystems.org/forums/showthread.php?220874-More-Radiator-Sandwich-testing), it would seem that my alternative 3 (spaced sandwich) will always perform worse than either alternative 1 or 2 (seperate radiators).

What I'm really interested in:
1. Which alternative makes the most sense?
2. What setups (approximating my alternatives) have been the most prevalent for prior STH10 (or similar) builds?
post #2 of 8
To be honest I don't know how much of a real world difference the alternatives may make outside of 1-3 centigrade with that radiator real estate.

With my STH10 I have them as the one intake, and one exhaust to avoid the turbulence issue. I think this is the most common orientation.

Some other things to bear in mind:

I think 560's in the top chambers interfere with front flex bay if you planned on using it, bear in mind where you are gonna put your PSU if you have 2 full rads in each chamber.

I only have 3 since I'm lazy and have the PSU up top behind one rad, some people have 3 x 480's and have a 240 or 360 with the PSU, or they mount the PSU in the case using the PSU mounting bracket.

Have fun!
post #3 of 8
Thread Starter 
Thanks a lot for the example setups, great food for thought.

Good point about remembering to make room for the PSU, had completely fled my mind for a moment.

You are probably right about the different alternatives having a negligible impact on performance in real world scenarios with that amount of radiators. As an added boon, the one intake & one exhaust option also negates the need for using a fan in the flex bay, freeing it up for other uses.
post #4 of 8
Yup!

And if it's STILL not enough for you, pedestal time!

BTW what sort of build will you be running?
post #5 of 8
Heya Wolf.

I am running option 2 in the bottom of my STH10.

2 Hardware labs GTX 560's push/pull both sides pulling air in with a front 120mm fan also pull air in and the entire lot venting out the rear PSU covers using the hexmesh PSU cover option.

I have my PSU and Dual bay Dual d5 bayres up front top as well.

Top Chamber is not as tall as the bottom chamber so you cannot use 560mm rads, at best would be dual 480mm.

Also its a bastard to bleed a pair of rads of that size I found having them on the bottom and the res at top air bleed out naturally in a few hours.

I could have fit so many more rads in but once you running 1120mm of rad space it keeps everything cool unless you're going for a extreme system.
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post #6 of 8
Thread Starter 
Thanks for the heads-up about the top chamber, Mrshilka.

I do like the sound of your all pull in/rear exhaust setup. I'll probably end up buying the extra accessories just to have the option.

My currently planned build is not an extreme one, as it's mostly about me just trying to nail the basics.

The core of my current system is a good old i7-975 and a Rampage 2 Extreme, dating back to 2009, all running at stock, which still performs admirably well.

Rest of the specs are:
Cooler Master HAF X
24GB DDR3 Corsair Dominator DHX 1600MHz
240GB Corsair Force Series 3 SSD
EVGA GeForce GTX 590 Classified
Corsair AX 1200W PSU

Fans and cooling is all stock, except for the cpu cooler, which I replaced with a Noctua NH-C14.

For my new build I really want good support for Sata 3.0 and USB 3.0, my current rig having no such capabilities whatsoever. With the Z87 chipset having native support for all of this, it doesn't make much sense for me personally to go for X79 at this point. I'm still waiting for more of the new Z87 motherboards to get reviewed before making my decision (maybe wait for rev 2.0 too), so I will probably acquire the case and most of the loop components well before the actual computer components. I also want a silent build (no Boeing 747).

Planned build so far:
CaseLabs MAGNUM STH10
Intel Core i7-4700K
Gigabyte G.1 Sniper 5
EVGA GeForce GTX 780 "Hydro Copper"
32GB DDR3 Corsair Vengeance Pro Silver 2133MHz
Corsair AX 1200i PSU

Water loop:
x number of Cougar Vortex HDB CF-V14H/V12H fans
Monsoon Series Two D5/MCP655 Dual Bay Reservoir (top)
2x MCP655-PWM Pumps (or 2x AquaComputer D5 Aquabus if I go for an Aquaero 5)
2x Black Ice SR-1 560 (bottom)
Koolance CPU-380I
Monsoon compression fittings
Koolance quick disconnects (motherboard, radiators and drain)

I am considering delidding the cpu and using Liquid Ultra straight on the die, maybe even try running it naked (I am aware of the associated risks).

I'm having some trouble settling on a color theme for the build, the Gigabyte G.1 motherboard being green (ugh), but specwise being right up my alley. Also been looking at the MSI Gaming (red/black) and Power series (yellow/black) boards, only thing bugging me being the Killer NIC (do prefer Intel NICs personally) and the slightly inferior onboard audio (solution being to just get a seperate audio card).

I'm also trying to figure out if I want a black or a white case. Choices, choices...

Last thing I need to decide is if I want PWM fans (splitter to cpu fan or PWM controller) or plain old regular voltage regulated ones, either just plugged straight into the PSU or through a controller.
Edited by Wolfus - 6/28/13 at 8:18am
post #7 of 8
Quote:
Originally Posted by Wolfus View Post

Thanks for the heads-up about the top chamber, Mrshilka.

I do like the sound of your all pull in/rear exhaust setup. I'll probably end up buying the extra accessories just to have the option.

My currently planned build is not an extreme one, as it's mostly about me just trying to nail the basics.

The core of my current system is a good old i7-975 and a Rampage 2 Extreme, dating back to 2009, all running at stock, which still performs admirably well.

Rest of the specs are:
Cooler Master HAF X
24GB DDR3 Corsair Dominator DHX 1600MHz
240GB Corsair Force Series 3 SSD
EVGA GeForce GTX 590 Classified
Corsair AX 1200W PSU

Fans and cooling is all stock, except for the cpu cooler, which I replaced with a Noctua NH-C14.

For my new build I really want good support for Sata 3.0 and USB 3.0, my current rig having no such capabilities whatsoever. With the Z87 chipset having native support for all of this, it doesn't make much sense for me personally to go for X79 at this point. I'm still waiting for more of the new Z87 motherboards to get reviewed before making my decision (maybe wait for rev 2.0 too), so I will probably acquire the case and most of the loop components well before the actual computer components. I also want a silent build (no Boeing 747).

Planned build so far:
CaseLabs MAGNUM STH10
Intel Core i7-4700K
Gigabyte G.1 Sniper 5
EVGA GeForce GTX 780 "Hydro Copper"
32GB DDR3 Corsair Vengeance Pro Silver 2133MHz
Corsair AX 1200i PSU

Water loop:
x number of Cougar Vortex HDB CF-V14H/V12H fans
Monsoon Series Two D5/MCP655 Dual Bay Reservoir (top)
2x MCP655-PWM Pumps (or 2x AquaComputer D5 Aquabus if I go for an Aquaero 5)
2x Black Ice SR-1 560 (bottom)
Koolance CPU-380I
Monsoon compression fittings
Koolance quick disconnects (motherboard, radiators and drain)

I am considering delidding the cpu and using Liquid Ultra straight on the die, maybe even try running it naked (I am aware of the associated risks).

I'm having some trouble settling on a color theme for the build, the Gigabyte G.1 motherboard being green (ugh), but specwise being right up my alley. Also been looking at the MSI Gaming (red/black) and Power series (yellow/black) boards, only thing bugging me being the Killer NIC (do prefer Intel NICs personally) and the slightly inferior onboard audio (solution being to just get a seperate audio card).

I'm also trying to figure out if I want a black or a white case. Choices, choices...

Last thing I need to decide is if I want PWM fans (splitter to cpu fan or PWM controller) or plain old regular voltage regulated ones, either just plugged straight into the PSU or through a controller.

Decisions decisions!

I spent a long time contemplating between black and white (or a custom combination) and ultimately decided to go with black because I figured:
(1) It's easier to match things in, especially bearing in mind you will be using the case for very many years and therefore several builds
(2) I don't have an artistic enough eye to match the colors in a mixture and not mess up haha
(I mean if you can pull off white for the rest of your builds and have it appealing to you by all means go for it!)

I would suggest scouring the internet for STH10 pictures and buildlogs- I did it literally for weeks before deciding what I wanted and what components I wanted for the plumbing, accessories, and whatnot.

I have non-PWM 120 mm cougar fans and although I have them connected to a fan controller, to be honest, I never need to turn it down since they are pretty silent anyway (just some anecdotal data for you), so you can use that to determine how you want to hook up your fans. I would suggest going straight to the PSU or through a fan controller, possibly using 3-pin distributor blocks to keep it neat (or 3 x -y- splitter cables), so you don't have to worry about overloading any mobo PWM headers.

Did you consider if you're gonna be sleeving cables? Personally I was too busy for this, so I ended up getting cable extensions, especially since they made life easier in a case like the STH10. Since you are using an AX1200 you can just get the Corsair sleeved ones for a pretty cheap price.

Make a build log!
post #8 of 8
I have 6 120mm cougar v12s and 16 140mm vh14 non pwm in my build.

I run them all at 12v and they are very quiet for the performance they offer.

Using DEMCiflex filters on the 140mm intakes.

Depending on how you setup your build you will likely need to use cable extenders due to the vast distances cables need to reach.
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Slayer
(17 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 3930K ASrock X79 Extreme9 Asus GTX 980 ti Poseidon  Corsair  
Hard DriveHard DriveHard DriveCooling
Intel 520 Western Digital Black Western Digital Green Custom Water cooling Loop 
OSMonitorKeyboardPower
Windows 7 Ultimate 64bit Asus ROG Swift Logitech G19 Seasonic XP-1000 Platinum 1000W Power Supply 
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CaseLabs STH10 Razer Diamondback Razer Exactmat Audio-technica A900x 
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Yamaha RS V367 
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