360° View - Gamer Storm Lucifer Heatsink Information on Frostytech's test methodology is available here.
The Lucifer heatsink ships with a 140mm PWM fan that rotates at 1400-700RPM and a pair of extra wire fan brackets. The 163mm tall heatsink incorporates six 6mm diameter copper heatpipes, a copper heatspreader and a 105mm tall aluminum fin stack. The cooling fins are spaced 2.75mm apart and measure 0.4mm thick. The bottom-most fin is elevated 46mm above the CPU, providing good motherboard clearance for this boxy (142x135mm) heatsink.
The 6mm diameter copper heat pipes are soldered to the copper base plate and swaged into the aluminum fins. The base is capped with a small 9mm section of aluminum that centers and supports the fulcrum mounting bar. The wire fan clips don't have finger tabs, so removing a fan can be a bit challenge in the confines of a computer case.
The nickel plated copper base of the Lucifer heatsink measures 36x42mm in size and is 2-5mm thick. Looking at the top of the heatsink, note the cut outs in the aluminum fins and four notches where fans can be mounted. The cutouts correspond to the location of mounting hardware screws, but a long screw driver is an asset when installing this heatsink.

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.

DeepCool's Gamer Storm Lucifer heatsink has a very smooth, polished nickel plated copper base plate. Surface roughness is at or better than ~8 microinches. According to the straight edge, the base is nearly flat in one axis and very slightly convex in the opposite.

Up next, acoustic measurements with each of the fans....