post #21 of 21
Quote:
Originally Posted by gunzkevin1 View Post

Well just from feeling the airflow with my hand, it felt directed fairly well. A good strong gust throughout the face.

The video with the fog box clearly demonstrates the effect I was talking about. The air flow extends out radially to a large degree.
Quote:
Well, from what I have seen, and why I chose this cooler. The linear design for the heatpipes is found on better performing coolers. For example, the Noctua NH-D14 and the SilverStone Heligon HE01 both have linear heatpipes. I know these are also dual heatsink designs, but I believe this design to be superior. Instead of two hot areas dissipating with all of the heat pipes blocking airflow, multiple heat pipes in a line would offer more even heat dispersion along with no detriment to the airflow reaching the heatpipe behind it. I have no actual proof of this being better, just my 3 years (so far) of mechanical engineering classes. thumb.gif

When I first observed heat-pipe based designs with all of the heat-pipes in a row in what one would think would be "blocking each-other" I had the exact same thoughts. No doubt for the exact same reasons as I am also very mechanically inclined. I then tried to figure out why some of the finest performing coolers on the market were able to achieve such good results with this counter-intuitive design (my initial thoughts were like yours, that the best performance would be from heat-pipes spread out "across" the heat-sink such that each would have "equal opportunity" to get direct air-flow on it.)

My conclusion was that, since the direction of flow from typical computer fans is NOT straight in front of the fan (unless it is like that SS model fan in the domo video), the air-flow is actually diagonal across the "row" of heat-pipes in any single fan push-configuration. There are trade-offs in each configuration but it would seem that the pitfalls of putting the pipes in a "row that blocks itself" are often a wash in actual application because they are not actually blocking each-other as badly as it would seem on initial observation. The only HSFs I have seen with the heat-pipes spread across the length of the sink that performed better than the units that configure them in a row extending out from the fan, are those "double" heat-sink designs that you pointed out, that stand to win due to their enormous size regardless of these nuanced considerations. Some more examples of those designs: Zalman CNPS14X, 9900MAX, Thermalright Silver Arrow... As it would turn out, these particular "double tower" sinks with heat-pipes spread out do perform well, but there are examples of coolers that have heatpipes "in a row," like the Prolimatech Megahalem, that can perform in the same class when given similar air-flow.

Then there's the "classic" go-to CM 212 EVO (and similar performing CNPS10X), which has it's pipes staggered right in the region of highest flow from the fan, best compromise perhaps? Considering the fact that the EVO is almost always a chart-topper in it's class, I believe there is something to be said for getting those heat-pipes in the right place, even if the "right place" is not always the most intuitive.
Edited by mdocod - 3/17/14 at 7:59am
     
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CPUMotherboardGraphicsRAM
FX-8350 990X EVO R2.0 Sparkle GTX460 768MB ballistix tactical 2 x 8GB 
Hard DriveHard DriveOptical DriveCooling
Toshiiba THNSNH 256GB Enterprise RE3 1TB Asus BD combo drive Artic A30 
OSMonitorMonitorMonitor
Manjaro Linux Samsung 21.5" LCD E2009WFP E2009WFP 
PowerCase
Seasonic G 550W Modular Fractal Design Core 3500 
CPUMotherboardGraphicsRAM
FX-6300, 4.7 GHZ@1.43V GA-970A-UD3P GTX 460 768MB Mixed DIMMs. 2x4GB + 2x8GB @ 1600-8-8-8 
Hard DriveHard DriveHard DriveHard Drive
Toshiba THNSNH 19nm 256GB 1TB Spinpoint F3 WD RE3 1TB WD RE3 1TB 
Optical DriveCoolingOSOS
yes CM Seidon 120V SolydK OpenSuse 13.1 
OSOSMonitorMonitor
Linux Mint 9-32 bit // Linux Mint 17-64 bit  Manjaro Xfce Samsung 21.5" HannsG 21.5" sideways! 
KeyboardPowerCaseMouse
Sticky ATNG Rosewill Green 630W NZXT Gamma Basic Microsoft corded 
CPUMotherboardGraphicsRAM
A10-6800k 4.8GHZ @ 1.375V, 1.2GHZ iGPU Gigabyte GA-F2A85XN-WIFI HD8670D Ripjaws 
Hard DriveOptical DriveCoolingOS
Seagate ST1000DM003 Asus BC-12B1ST/BLK/B/AS Zalman CNPS5X Linux Mint 15 
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LG IPS224V-PN Logitec K360 FSP 400W Aurum S 80+ gold Prodigy 
Mouse
logitec M235 
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