|Zalman VF900-Cu Ultra Quiet Heatpipe VGA Cooler|
|Reviews - Featured Reviews: Cooling|
|Written by Bruce Normann - Edited by Olin Coles|
|Wednesday, 18 June 2008|
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Overall, a highly custom design that makes the most of the size and cost envelope that it has to operate within.
Taking a closer look, the GPU was completely covered with thermal interface material, with some excess hanging over the sides. At first look, it appeared thick and clay-like, but was easily smoothed out with a little finger pressure. The thermal interface pads did not leave any significant residue on the RAM chips, although one of the four did stick to the chip when the stock cooler was removed.
Our next step is to thoroughly clean the surfaces of the GPU and RAM chips with a lint free cloth and some isopropyl alcohol. Oh, did I mention that anti-static handling precautions need to be followed whenever handling the card; that's the pink-colored foam you see in the background sometimes. There are enough warning signs on the package to alert you to the dangers of static electricity (plus an extra warning sign on the alcohol <g>).
The next step is to mount the small heatsinks directly to the four RAM chips. They are roughly the same size and have a self-adhesive backing on the base which doubles as a thermal interface pad. The adhesive is not very "tacky"; once you place the heatsink onto the chip, it can slide around a bit.
This is actually a nice feature, since you can get the heatsink aligned very easily and precisely once it is in place. The adhesive cures with time and heat, so don't worry that they will slip off later.