Dynatron Model-R 1U Cu Microfin Heatsink Review
The market for 1U servers is increasing rapidly these days
as data centers increasingly move away from the bulky 3U and 5U servers that were once the
staple of websites. It only makes sense for the supply of 1U server heatsinks to move
with equal momentum.
To fulfill the requirements of cooling server
processors in such an extremely constrained environment, a few companies - most
notably Alpha - have introduced low profile heatsinks designed specifically for
1U servers. These new class of high performance heatsinks are small compared to
their desktop brethren, but have a much larger workload to deal with.
As selection goes, the options for
cooling 1U servers are still small compared with the huge variety of heatsinks
designed for desktops with AMD or Intel processors. However, with the
introduction of the Dynatron Model-R (DC1206BMR) that list has at least grown by
Based on Dynatrons' signature high-density Microfin technology, the Model-R sports
a high fin pitch and solid copper construction. With its sixty 0.35mm
thick fins spaced 1.0mm apart, the 24mm tall Model-R closely resembles the Model-O.
However, to comply with the requirements of cooling a 1U server
processor, the Model-R uses fins of only 7.0mm in height - an extraordinarily thin
profile for a server if you really think about it.
1U Servers running: AMD Socket A processors up
to 1.3GHz. Intel FC-PGA socket 370 processors to 1.26GHz.
5300RPM, 24CFM, 12V, 0.20A
- Heatsink Dim: 24x63x63mm
Material: C1020 Copper
- Weight: 220
- Mfg by: Dynatron
The Microfins are small
Microfins are a technology
employed by Dynatron for constructing fully-finned heatsinks from a solid piece
of aluminum or copper by means of a skiving action. Essentially, a knife
blade cuts into the surface of the heatsink base material to draw up fins of
about 0.35mm in thickness. While this is not a unique to Dynatron entirely (AVC
uses similar technology on one of their coolers), the Model-R does support the
tightest fin pitch we have seen to date.
As each Microfin is
formed, the side that is in direct contact with the blade remains quite
shinny while the opposite becomes rough. The stresses and motion of a
sliver of copper being drawn up from the flat plate cause distortion on the
crystalline level and this causes the rough surface.
Hopefully you can see from the
above set of images that the heatsink is indeed a single-piece,
with no interface between the fins and the base whatsoever.
The shape and form of the fins on the Model-R are the best that we have
seen from all of the other Dynatron heatsinks we have looked at. I guess the
higher the fin gets the more likely it is to suffer from
some amount of height.