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Thermalright SI-128SE Heatsink Review
Thermalright SI-128SE Heatsink Review
Abstract: The SI-128SE cooler itself is big, a 120x120mm fin array hovering like SkyCity over a compact base connected via four 8mm diameter heatpipes.

 Company link  Category  Published  Author 
thermalright   Cooling / Heatsinks   Dec 11, 2007   Max Page  
Home > Reviews > Page Title: 360° View - Thermalright SI-128SE Heatsink

360° View - Thermalright SI-128SE Heatsink
Information on Frostytech's test methodology is available here.

The Heatsink Fan:
The Thermalright SI-128SE accomodates 120mm fans, regardless of thickness. In this review Frostytech will be using a Mechatronics model that spins at 1500RPM, but you can choose whatever fan you prefer. Before the fan is installed onto the heatsink two small strips of elastomer are stuck to the bottom edge of the fan frame. This helps reduced fan vibrations from being transmitted to the heatsink, or from creating any noise.

Heatsink Frame
The base of the Thermalright SI-128SE heatsink is formed from a 5mm thick copper base plate and 8mm extruded aluminum section. The total base thickness is 14.5mm. All joints are soldered for enhanced thermal conductivity. The aluminum fins have small 1x5mm vents punched into the side to improve lateral airflow through the fins. Wire clips designed for a 120mm fan are provided, and these slide into the two very small holes alone either bottom edge of the 33x125mm fin array.

Heatsink Side B:
The Thermalright SI-128SE is shipped with three different mounting brackets for various Intel and AMD CPU sockets. Each of these clips meets with another bar that locks into place in the center hole in the base, that keeps the Thermalright SI-128SE from sliding around on top of the CPU. The four nickel plated heatpipes are 8mm in diameter, and all base and aluminum fin joints are soldered.

Heatsink Side C:
The bulk of the Thermalright SI-128SE is elevated 55mm above the base to provide good clearance for adjacent motherboard components. The body of the heatsink stands 92mm tall, the upper aluminum fin section is 120mm square. Each aluminum fin is 0.27mm thick and spaced 1.2mm from the next. This is a rather fine fin pitch. The thin wires at the right support the upper portion of the heatsink, a good measure since heatpipes will fail once they crack.

Heatsink Base:
The base of the Thermalright SI-128SE heatsink is machined very smooth, surface roughness is only about 16 microinches. The base is not perfectly flat however, Thermalright have purposefully machined it with a very slight convex profile in both axis. The nickel plated copper base plate measures 41x45mm in size - and you may want to spend a few minutes lapping it flat. The four 8mm diameter copper heatpipes are soldered to the copper base to reduce thermal joint resistance.

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Table of Contents:

 1:  Thermalright SI-128SE Heatsink Review
 2: — 360° View - Thermalright SI-128SE Heatsink
 3:  Acoustic Comparisons and Base Surface Quality
 4:  AMD K8 Heatsink Temperature Comparisons
 5:  Intel LGA775 Final Heatsink Temperature Comparisons

List all thermalright heat sinks that Frostytech tested?

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Time stamped: 2:17AM, 12.17.2018
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