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There are effectively six heatpipes extending down into the base, but as mentioned above, they are actually three loops, with the center portiona sandwiched and soldered between the base and the secondary aluminum fins. The mounting hardware clips into the sides of the Fast-Phase structure; shown above are the AMD spring loaded clips, which work easily enough, with preloaded springs to apply a good (precisely calibrated?) amount of pressure. The base is smooth and flat.
These are the Socket 775 and
1366 arms with plastic locking pushpins, now in 1366 position. Slide each pushpin closer to the base and they fit into 775 socket.
The fan has good geometry for low tonal noise, with the blades' trailing edges nearly perpendicular to the struts throughout the rotation. It is a 4-pin PWM sleeve bearing fan rated to draw just 0.17A current at full speed, with claimed wide speed range of 300 ~ 2,500 rpm. The 7.2 - 31.07 dBA spec is promising as well.
The most critical aspect of installation is for the heatsink
to be securely mounted. The more firmly it is installed, the better the contact
between the heatsink's base and the CPU itself. It's also less likely to fall
off. Ease of installation is also important a simple mounting scheme
means less time spent installing, and a reduced likelihood of screwing up.
The pushpins employed here for Intel 775/1366 socket boards work well enough. Access to the pins is unimpeded by the heatsink itself, and the total weight of 530g with fan and mounting hardware does not seem onerous for the plastic pins. The heatsink seemed quite firmly secured in the end.
For AMD processors, there is only one way that the Katana 3 can be mounted, but as most AMD boards have a north-south orientation for the heatsink retention frame, the fan ends up blowing in the right direction, towards the back of the case where there is usually an exhaust fan, rather than up towards the PSU intake (in a typical case).
Katana 3 set up and ready to go (without fan) on our Intel 775 socket heatsink testing board.
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