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Zalman VF700-AlCu VGA Heatsink Review
Zalman VF700-AlCu VGA Heatsink Review
Abstract: The Zalman VF700-AlCu heatsink is intended to cool overworked videocards quietly. The heatsink is constructed of the same fan-shapped fin design that has made Zalman a well known manufacturer.

 Manufacturer  Category  Published  Author 
Zalman   Cooling / Heatsinks   Jul 01, 2006   Max Page  

Home > Reviews > Page: 360° View - Zalman VF700-AlCu VGA Heatsink

360° View - Zalman VF700-AlCu VGA Heatsink
Information on Frostytech's test methodology is available here.
The Heatsink Fan:
The eleven bladed impeller on this 15mm thick 80mm fan creates a moderate amount of airflow through thE cooling fins very quietly. The fan can be connected to 12V DC or 5V DC via the 3-pin multi-connector power connector which is supplied by Zalman. This allows the fan to spin at either 1350RPM or 2650RPM depending on user preference. Power comes via a standard 3-pin motherboard fan header which supports RPM monitoring. When installed, the Zalman VF700-AlCu VGA heatsink will occupy one additional PCI slot worth of space adjacent to the videocard.

Heatsink Top:
With the 80mm fan removed from the Zalman VF700-AlCu we have a clear look at how the heatsink has been built from individual strips of copper and aluminum. The copper fins are ~45mm on the long side, ~15mm on the short. Because the heatsink cooling fins are built slightly off-center to the base, exhaust airflow blows down onto the VGA memory which is located adjacent to the GPU.

Heatsink Side A:
The copper fins are spaced 2.0mm apart along the outer edge, and stand ~23mm high. The entire VF700-AlCu heatsink is 30mm tall. Each copper/aluminum fin measures 0.3mm thick.

Heatsink Side B:
The base which attaches to the GPU is about 9mm thick at the center. In this picture you can see the two bolts which run through the VF700-AlCu heatsink and hold it together.

Heatsink Side C:
The bottom fin pitch is much more closely spaced, perhaps 0.5mm at most. The edges of the fins are all flat right angles, so air will have a more difficult time passing through such close spaces. In fact, we'd suspect that airflow is more likely to just circumvent this set of cooling fins altogether.

Heatsink Base:
The base of the VF700-AlCu VGA heatsink is 30mm in diameter. This size base should cover the vast majority of GPU's on the market, from both the nVidia and ATI stables. The machined surface finish is razor flat and very smooth. Surface roughness is at or better than ~8 microinches, which is excellent.

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Table of Contents:

 1:  Zalman VF700-AlCu VGA Heatsink Review
 2: — 360° View - Zalman VF700-AlCu VGA Heatsink
 3:  Surface Roughness and Acoustic Comparisons
 4:  Final Heatsink Temperature Comparisons

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