Two Big Top-downers: Big Typhoon VX & Xigmatek HDT-D1264

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Old mounting system.

New mounting equipment.

The VX installation procedure is much simpler than the troublesome nut and bolt method of the original Big Typhoon. The VX uses a simple tension clip for K8/AM2 installation and standard Intel pushpins for LGA775.

LGA775 installation is easy.

At the center of the mounting plate there is a simple guide for the LGA775 mounting frame. The mounting tension might not be high enough. It was easy to rotate the entire heatsink up to about 10 degrees without using much force.

Heatsink mounted on our test platform.

The heatpipes may cause trouble for some users. While the heatsink is symmetrical, it can be rotated, at least for Intel systems. On most AMD motherboards, the heatpipes will face left-right, that is 90 degrees to the orientation pictured.


The LGA775 mount.

The installation procedures for the D1264 are just as easy. For AMD systems, a standard tension clip is provided. For Intel platforms, two sets of pushpins need to be screwed to the mounting plate.

Thermal compound footprint.

After testing, we removed the heatsink and inspected the base. The footprint of the CPU heatspreader left on the base shows us that only the two center heatpipes made complete contact. The outside heatpipes overhung the CPU. Makes you wonder whether three heatpipes might actually perform better. A fair amount of thermal compound found their way into the gaps between the heatpipes and mounting plate.

Heatsink mounted on our test platform.

The tension on the pushpins of the HDT-D1264 was much higher than usual, suggesting that the distance between base and final pushpin position is smaller than on most coolers. We highly recommend this heatsink be installed outside the case as a lot of force is required to engage each pushpin Once on, it was firmly mated — it would not rotate, even when moderate force was applied. Expect the corners of the heatsink base to leave marks on the heatspreader (and vice versa). It's a bit nerve-racking having pieces of plastic holding up this much weight. As with the VX, the cooler can be rotated to suit your individual needs, but the majority of AMD users will be forced to have the heatpipes either pointing downward or upward (in any tower case).

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