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Scythe Infinity SCINF-1000 Heatsink Review
Scythe Infinity SCINF-1000 Heatsink Review
Abstract: At least we would assume all that is accurate after testing the Scythe Infinity heatsink... The Infinity is a big heatsink for sure; it stands 155mm tall, 125mm wide and about 114mm deep with its 120mm 1200RPM fan. The scale tips at 960 grams, or just short of a kilogram.

 Manufacturer  Category  Published  Author 
Scythe   Cooling / Heatsinks   Dec 14, 2007   Max Page  

Home > Reviews > Page: 360° View - Scythe Infinity SCINF-1000 Heatsink

360° View - Scythe Infinity (SCINF-1000) Heatsink
Information on Frostytech's test methodology is available here.

The Heatsink Fan:
The 120x120x25mm fan is held in place on the Scythe Infinity with a pair of springy wire clips. A second 120mm fan may be installed onto the opposite side of the heatsink if desired (not included), or 90mm fans can be attached to either edge. The fan spins at a low 1200RPM, generating less than 38dBA noise according to Frostytech's real world sound measurements. It connects via a standard 3-pin fan header to the motherboard and supports RPM monitoring.

Heatsink Exposed:
Scythe call the overlapping fins here the "Infinity Interleave Fin Structure". Every other fin is a different width, some 42mm and others 96mm wide. This gives the Infinity heatsink its distinctive fin density right around the heatpipes, and wide fin pitch at the center of the heatsink where airflow is reduced. The voids between the aluminum fins are meant to aide slower airflow moving through the cooler with as little resistance as possible. Each aluminum fin is 0.38mm thick, and spaced 3.5mm or 1.5mm apart.

Heatsink Top:
Poking out the top of the Scythe Infinity heatsink are the tips of five "U" shaped 6mm diameter copper heatpipes. To help reduce pressure drop a 5mm plenum is left behind the fan motor. Springy wire clips will hold a 120mm fan firmly in place on any one of four sides of the heatsink. Only one pair of 120mm sized clips is provided. The ten heat pipe ends are covered with false nuts for the sake of appearance. The bulk of the heatsink is 125x114mm in size.

Heatsink Side A:
The Scythe Infinity heatsink stands 155mm tall, the fins making up 108mm of that total height. There is 38mm space below the bottom most fin to provide clearance for adjacent motherboard components. At the bottom is the extruded aluminum heatsink which the mounting clips lock into. The five heatpipes are soldered between the aluminum extrusion and a 2mm thin copper base plate below. The Infinity heatsink is 125mm wide, so you might want to measure your motherboard clearances first before picking this unit up.

Heatsink Side B:

The Scythe Infinity is a big heatsink. The false nuts covering the heatpipes add an additional 14mm to its overall height unnecessarily.

Heatsink Base:
The copper base soldered onto the bottom of the Scythe Infinity heatsink measures 45x51mm in size. It is very smoothly polished with a surface roughness of ~8 microinches. The base is generally very flat. The extruded aluminum section above the copper base provides rigidity and a place for the mounting clips to transfer force directly onto the CPU core. The copper plate itself is quite thin, just 2mm thick in fact. The heatpipes, copper base and small extruded aluminum heatsink are all soldered together.

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Table of Contents:

 1:  Scythe Infinity SCINF-1000 Heatsink Review
 2: — 360° View - Scythe Infinity SCINF-1000 Heatsink
 3:  Acoustic Comparisons and Base Surface Quality
 4:  AMD K8 Heatsink Temperature Comparisons
 5:  Intel 775 Heatsink Temperature Comparisons

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