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Cooler Master Nepton 140XL Liquid Cooling System Review
Cooler Master Nepton 140XL Liquid Cooling System Review
  95%   
Abstract: The Nepton 140XL ships completely assembled, plumbed and filled. The user need only attach the heat exchanger to a free fan vent (140mm or 120mm) on the inside of the PC case and mount the waterblock/pump head to the processor. There's no silly software or USB connections to monitor pump speed or liquid temperatures.

 Company link  Category  Published  Author 
Coolermaster   Cooling / Heatsinks   Jan 05, 2014   Max Page  
Home > Reviews > Page Title: 360° View - Coolermaster Nepton 140XL Liquid Cooler

360° View - Coolermaster Nepton 140XL - Water Block


Information on Frostytech's test methodology is available here.

The Nepton 140XL waterblock stands 48mm tall. Pump power is supplied by a 3-pin motherboard fan header and the Coolermaster logo is illuminated by white LEDs as a visual indicator of status. Both 90-degree pipe connections coming off the water blocks swivel. The Intel and AMD metal mounting brackets attach with a couple of screws, so installation is remarkably easy.

The pump head measures 70x75mm in size, not including the metal AMD/Intel brackets when they are attached. Below the black plastic bezel, the actual waterblock is formed from a single piece of robust grey plastic.

The copper base plate is ~1.3mm thick and measures roughly 63x57mm. Anti-tamper triangular head screws prevented us from taking a close look at the Nepton 140XL's skived copper plate.

360° View - Coolermaster Nepton 140XL - Heat Exchanger


Information on Frostytech's test methodology is available here.

The 38mm thick aluminum heat exchanger used with the Nepton 140XL measures 172x140mm in size and supports a pair of 140mm fans which are mounted to the front and back. Mounting holes are provided for 120mm fans, should you need to connect the heat exchanger to a smaller 120m PC chassis fan vent, or wish to use 120mm fans.

Fans can be attached on either side of the heat exchanger. The 15mm OD FEP tubing is connected to metal barbs that do not swivel. The fill valve is not user accessible.

Base Finish and Flatness

Flipping a heatsink over to inspect the business end is often a simple indicator of overall cooler quality. More practically speaking, a heatsink is in many ways only as effective as the contact it makes with the processor - the flatter and smoother the better. Base finish is one of the criteria that Frostytech measure in the course of evaluating heatsinks, and it involves two distinct aspects. Surface Finish is the first; this is calculated with the aid of Surface Roughness Comparator that has a cross section of common machine surface finishes and their numerical surface roughness equivalents in microinches. The second is Surface Flatness. This is tested with an engineer's straight edge or proven flat surface, in two axes.

The copper base plate of Coolermaster's Nepton 140XL waterblock has a fine-sanded surface finish with a surface roughness of approximately ~32 microinches. The copper base plate is very slightly convex in one axis and just about perfectly flat in the opposite. The copper base plate must be somewhat flexible as thermal compound squeezed out during testing, indicating a good mating contact.

Next, acoustic measurements and then AMD and Intel synthetic thermal test result charts.



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Table of Contents:

 1:  Cooler Master Nepton 140XL Liquid Cooling System Review
 2: — 360° View - Coolermaster Nepton 140XL Liquid Cooler
 3:  Acoustic Measurements
 4:  AMD Heatsink Temperature Comparisons
 5:  Intel LGA115x/775 Heatsink Temperature Comparisons
 6:  Intel LGA2011 Heatsink Temperature Comparisons

List all Coolermaster heat sinks that Frostytech tested?

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