360° View - OCZ Vendetta 2 Heatsink
Information on Frostytech's test methodology is
The 120mm PWM fan on the OCZ Vendetta 2 spins at a
pretty low 800RPM to 1500RPM and draws power from a standard 4-pin PWM
motherboard fan header. It is backwards compatible with 3-pin connectors.
The three copper heatpipes are 8mm in diameter, and extend from the base
up through all the fins. The two cuts in the aluminum base are for the AMD
K8 mounting clip to lock into. The aluminum fins measure 0.35mm thick and
are spaced 1.75mm apart.
The OCZ Vendetta 2 heatsink stands 157mm tall, the
bottom-most fin is 41mm above the CPU socket for clearance of adjacent
capacitors, northbridge heatsinks, etc. The three copper heat pipes are
positioned side to side at the center of the aluminum block where they
make direct contact with the processor. The base composed of a 14mm thick
aluminum section to provide support for clamping.
The usable area of OCZ's Vendetta 2 base measures
40x35mm in size. The three 8mm diameter copper heatpipes have been swaged
into the aluminum base block, and each surface made flush by a light
sanding. Looking at the top of the heatsink, the small dimples and curve
of the aluminum fins are apparent.
Base Finish and Flatness
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 engineers straight edge or proven flat surface,
in two axis.
Vendetta 2 heatsink has a surface roughness of approximately 32 microinches,
which is considered good. The base itself has a sanded finish and is generally
quite flat in both axis. There are six small voids created where the copper
heatpipe meets up with the aluminum mounting block, but these serve a positive
use when the heatsink is clamped down by allowing excess thermal compound to
evacuate itself from between the heatsink and processor.