Intel CPU Heatsink S775 Roundup June 2006

Cooling/CPU Cooling by piotke @ 2006-06-20

We compare nine different Intel socket 775 heatsinks from Thermalright, Zalman, Titan, Scythe, GlobalWin and Thermaltake in our latest roundup. Can they prevent a Pentium 4 Prescott from melting without ruining our ears? Let?s find out.

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Scythe, Zalman and Thermalright

Scythe Katana 775

The ugly duckling from the roundup, despite its size the Katana is quite a light weight, several U-formed heat pipes are the strength of this heatsink, a 92mm sized fan which has a 4-pin connector provides the needed airflow.

Madshrimps (c)


Installation is very easy as it uses the same mounting method as the Intel stock cooler.

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Zalman CPNS9500 AT

Zalman has a S775 only version of their CNPS9500, their flower power turned vertical in a unique design of copper fins and heatpipes. A 90mm fan is integrated in the heatsink.

Madshrimps (c)
compared to Silent 775 (stock Intel was MIA)


You won?t find a fan mate (Zalman?s fan controller) in this package as the fan has a 4-pin connector and uses the Intel onboard fan connector (also 4-pin) to regulate fan speed.

Installation requires motherboard removal, after which you have to mount the included back plate using the 4 holes around the socket. It can be quite cumbersome, but once this is all in place you use a small metal plate to fix the heatsink on the CPU. This plate uses only 2 of the 4 available mounting holes; this allows you to change the orientation of the CNPS9500AT.

Madshrimps (c) Madshrimps (c) Madshrimps (c)



Thermalright HR-01 775

The HR-01 from Thermalright comes without fan and no material is provided either to mount one as the unit is meant to be used without one. Its large surface area and spread out aluminum fins help dissipate heat which is transferred from the copper base by 4 heat pipes.

Madshrimps (c)


Despite its large size the usage of the HR-01 as a passive cooling is limited to lower speed CPUs, if you want to use it on higher end chips the usage of the optional air duct which lines up with a rear 120mm case fan is strongly advised, a 3Ghz Pentium D qualifies as high(er) end and so the fan duct was mounted.

Installation was identical to the Intel stock cooler.

Madshrimps (c) Madshrimps (c) Madshrimps (c)
Madshrimps (c) Madshrimps (c)


We tested the HR-01 with/without rear 120mm fan, but do notice that without the rear fan the cooling was not yet 100% passive as the Power Supply has a 80mm fan at the bottom which draws in air from the case.
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