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Some questions regarding space constraints, cooling performance and tubes.

post #1 of 7
Thread Starter 
I have an AMD A8-3870k in a U-NAS NSC-800 which has very tight space constraints, and that is what I am trying to cool. The Noctua NH-l9a doesn't mount properly and this causes overheating issues.

I know quite a bit of stuff myself, but I'm approaching a slightly specialty build. I have a case with very tight space constraints (roughly 40mm thickness for a 280mm rad - 2x140mm) Furthermore, the radiator is at a direct 90 degree angle from the motherboard, which would put the fittings on the radiator almost perpendicular to the fittings on the processor (there is only 45mm clearance between the processor and the next piece of metal forcing 90 degree fittings on the processor and straight fittings on the radiator) - mounting the radiator the other way puts the fittings on the opposite side of the case, with the requirement of 90 degree fittings at the radiator and 90 degree fittings on the processor. Since the clearance is so low - Scythe slim slipstreams are an attractive option for fans on the radiator - but i know that the static pressure and CFM of those fans is quite low. From there the option is a full thickness radiator with full thickness fans mounted externally - while this is a plausible option it is not preferred. The only standard HSF I've found worth sticking on the processor in this case doesn't mount properly on the motherboard I have.



So basically it boils down to this:

Liquid cooling will fit - but it will be tight. A single loop with the processor only and a 280mm radiator, 2 90 degree fittings and straight fittings at the radiator - unknown where I will fit the pump (might canabilize a AIO cooler heatsink since the pump is integrated? Swiftech Apogee Drive is too tall, so thats not anoption.
Rigid tubes are the norm - but that might be an issue in this case. QDC's will help since I have to install the parts somehow.




Here's the questions:

What radiator/fan combination would you use in this case?
Are slipstreams sufficient for non-overclocking purposes?
Does anyone know of any extra flexible (think surgical) tubing for water cooling? It doesn't have to be pretty.
Will the flexibility of the tubing hurt performance (since it'll expand under pressure instead of simply pressurizing increasing flow rates)?

If any additional information is required for more appropriate advice - let me know.
Edited by Xaero252 - 9/3/13 at 4:44pm
    
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post #2 of 7
For your radiator question, after lots of research and looking into radiators that are slim with supreme performance the Alphacool ST30 seems to be the very best and low RPM fans work well with it creating a nice quiet build.

The tubing part, I am still researching tubing as I am looking to get some new tubing myself and I have a tight turn with my case. In my tubing where there is a rather tight turn I left extra tubing to try and prevent it but the tubing still gets thinner at some points due to the tight turn although it has rather good flexibility which makes it more susceptible to the slight kink in it.

Here is this I dont know if this will help you or not in your tubing quest,
http://www.xtremesystems.org/forums/showthread.php?157370-Tubing-Review-18-Types-of-Tubing-Reviewed-56k-warning

The last point for performance from what I have read, less tubing less turns better performance because you have better flow and nothing extra obstructing the flow/psi.
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post #3 of 7
Thread Starter 
well, I did some more research and it looks like even with the DC-LT pump (50mm x 50mm footprint) I cannot fit a pump anywhere. I might be able to fit the pump sideways(not recommended mounting, and I'd have to mount it using just velcro, with the outlet facing downward) I'll take some more accurate measurements when I get home, I did all of this via math based on the dimensions of the case, motherboard, and the 45mm clearance between the cpu heatspreader surface and the nearest metal surface. I'll look into things more... I may need to take the heatsink/pump unit from an h100 or h80 (anybody got a leaking one I can get for dirt cheap?!) Or persue the avenue of a pump/radiator combo. The DC-LT is promising but I don't know if I can get it to fit. I'm starting to really want a custom loop in this case now, I'll have to read that tubing review when I get home the images won't load here at work.
    
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post #4 of 7
Using velcro for mounting the pump is just fine, I am planning on adding a second pump to my setup at some point and I am going to use velcro as I dont want to screw a hole in my case and I can conceal it just as well with velcro.

The DC-LT pump is pretty small but you need a housing block for it right? or am I thinking of a different pump.
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post #5 of 7
Thread Starter 
Quote:
Originally Posted by spikezone2004 View Post

Using velcro for mounting the pump is just fine, I am planning on adding a second pump to my setup at some point and I am going to use velcro as I dont want to screw a hole in my case and I can conceal it just as well with velcro.

The DC-LT pump is pretty small but you need a housing block for it right? or am I thinking of a different pump.

No, that's the one. Problem is that no matter what pump I go with, the total height comes out to 50mm with a 90 degree fitting, which would be required in the space available. Even using the low profile ones. I'll see about maybe making a modification to the hot swap cage inside the case since theres probably about 5-10mm to be had there before making contact with the first drive... Could be pretty difficult.
    
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post #6 of 7
You could mount a swiftech micro res behind the raid card with some 90* fittings. Then mount a 350 pump behind the motherboard. Slap an apogee LP on the CPU, and a 240mm rad in the back and your set.

Another option is an off the shelf 240mm all in one. Swiftech's and Corsair's should both fit.

Can you take some pictures with the motherboard, psu and raid card installed?
Also measuments on the clearance on the top, back and mobo side of the cage would be nice.

If you are worried about the fans, you can mount them outside on the back of the case. Get black fans and a nice rad grill and it will look really nice. Though those slipstreams should be fine if you aren't using the GPU on the APU.

EDIT:
Res: http://www.swiftech.com/mcresmicrorev2reservoir.aspx
Pump: http://www.swiftech.com/mcp350.aspx
Block: http://www.swiftech.com/apogeelp.aspx
Rad: http://www.magicool.biz/magicool/product_240slim.htm
Edited by ionstorm66 - 9/3/13 at 6:38pm
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post #7 of 7
Thread Starter 
Okay; I've done some more precise measurements - a single 2x140mm (280) rad will NOT fit in this case with this motherboard - it runs into the rear i/o headers. If I shift the radiator up against the opposite side of the case (approx 1cm) It still will not fit. there is approx 50mm of space between the left side of the case and the drive caddy. There is approximately 54mm of space between the edge of the motherboard and the edge of the power/reset/usb on the front of the case - sufficient space for a pump. There is 0 space behind the raid card in my particular situation (in fact its actually attached to card board because it doesn't fit properly) since I'm using a Perc 5/i; I'm planning on upgrading to an IBM branded LSI card (its a 9280i - far superior to the Perc 5/i) that is both lower profile and supports a better backplane connector (i.e. the slimmer, round sata breakouts vice these full size sata breakouts. so there could be space for a reservoir there - however I should be able to fit a reservoir placing the pump next to the motherboard (especially if I opt for the DC-LT pump and the microres) I will likely still have to use the Apogee LP (which I can hopefully orient with the barbs facing upward instead of to the rear of the case.)

From there there is appr. 50mm of space from the top of the drive caddy to the top of the case. There is approximately 20mm of space below the drive cage, but there are no holes large enough for tubing to pass through (yet). If I orient a single 140mm radiator with the barbs at the top of the case, I can fit that easily. if I orient two 140mm radiators (assuming they fit with the 20mm spacing - they should) with the barbs down and the two attached with a loop of tubing between (yet again assuming this fits within the 20mm additional height constraint) and route the tubes under the cage I can fit that with some modding.

At any rate this seems to be no simple feat. I'll do a lot more measuring and see if I think its possible. If it is - it's just barely.

Another option I hadn't considered until just now - a 2x120mm radiator. I'd have to drill all new holes, but it would fit. I could probably get an empty grill to adapt the holes from 140 to 120. I could also shift the radiator however I needed to make it comfortable, and with the right shroud on the outside of the fans it wouldn't look too bad.

EDIT: DERP Oh wow, I'm an idiot - the fans installed on the case stock are 120mm fans. So obviously the 280 won't fit. Now lemme just get to work on seeing if a 240 will. LOLOLOL

Edit 2: Still no. It runs into the rear i/o just as before. I'll see if the single 120's will fit.

Edit 3: Nope. The only possible internal configuration is a single 120mm radiator oriented with the barbs upward and the fan holes shifted to the bottom edge of the case. Back to looking at air cooling options. Someone had an i5 based server running an Akasa cooler - but they don't make the same cooler for AMD.
Edited by Xaero252 - 9/4/13 at 12:29am
    
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