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 Zalman's LQ315 waterblock has a machined finish with a surface roughness of approximately ~16 microinches. The manufacturer ships it with a pre-applied circle of grey thermal compound. The copper base plate is convex in both axis so contact with a flat processor integrated heat spreader is less than ideal.
Next, acoustic measurements and then AMD and Intel synthetic thermal test result charts.
Find a Heatsink / RSS Feeds
. Latest Heatsink Reviews
. Top 5 Heatsinks Tested
. News RSS Feed
. Reviews RSS Feed
. Contact Us / Heatsink Submissions
. Submit News
Images © FrostyTech.com and may not be reproduced without express written permission. Current students and faculty of accredited Universities may use Frostytech images in research papers and thesis, provided each image is attributed.