Design and Functionality
First let me say a few words about the heatsink. Unfortunately, we have to state that SilverArrow SB-E Extreme uses the exact same heatsink as SilverArrow SB-E. It is the same dual-array tower heatsink measuring 165x154x130 mm and weighing a little over 800 grams:
Of course, it looks great, but frankly speaking, we have expected the Extreme model to have some constructive modifications in the heatsink.
I would like to remind you that this heatsink uses 8 copper nickel-plated heatpipes 6 mm in diameter. The heatpipes pierce two identical heatsink arrays of aluminum fins spaced out at 2.0 mm from one another. There are 102 fins total:
Each fin is 0.45-0.5 mm thick. The calculated effective heatsink surface area makes 11,500 cm2.
The distance between the two arrays is 27 mm therefore you can’t use the thick 32 mm fan will not fit into SilverArrow SB-E Extreme:
The heatpipes are soldered to the base, while the fins seem to be firmly pressed against them:
The copper nickel-plated base of the SilverArrow SB-E Extreme measures 53x40 mm and is polished to mirror-shine:
Thermalright is also very consistent when it comes to the evenness of the base surface. Our cooler sample has a clear bump along the long axis of the base:
The base surface along transverse axis is very even. The thinnest part of the base beneath the heatpipes is 2 mm thick.
The thermal paste imprints are full, but you can clearly tell that the cooler is pressed harder against the CPU heat-spreader in the center of the base:
Since the heatsink in the new SilverArrow SB-E Extreme hasn’t been changed a bit, then it must have new fans, right? This is correct. Instead of a single TY-150 and one TY-141 fan, the heatsink is equipped with two TY-143 fans:
The impeller size (152x140x26.5 mm) and shape of this fan model are exactly the same as the impeller and size of the familiar TY-140, but TY-143 boast more powerful motors that is why their rotation speed may vary between 600 and 2500 RPM. It is controlled by PWM method and both fans are connected to the same mainboard connector via a Y-splitter included with the cooler. The declared noise level should be 21-45 dBA, and airflow – 31.4-130 CFM.
Of course, these fans consume more power and can reach 7.2 W (per fan) at 0.6 A current:
Enhanced Hyper-Flow bearing (EHFB) is not mentioned anywhere in the specifications. The fans startup voltage is set at 5 V. they come with pretty short cables: only 300 mm.
The fans are attached to the cooler with traditional wire clips:
There are six clips like that included with the cooler, and if you wish, you can add a third fan to SilverArrow SB-E Extreme. The free operation of these fans up and down the heatsink arrays is limited with the clips and makes only 10-12 mm. You should use triangle silicone pads to reduce the vibrations created by the fan and transferred to the heatsink. In our opinion, they are a little too large and could have been one fourth the actual size without any loss of functionality. Yes, in this case you have to exercise better precision when sticking them to the heatsink, but they would pose less of an obstruction to the fan airflow.
This is what SilverArrow SB-E Extreme looks like with two TY-143 fans:
The whole thing weighs 1114 grams.