Today’s case comes from the community and a lengthy investigation was necessary because there were actually two causes of the pollution at the same time. I will describe my process, the measurements and also the conclusions in chronological order and it also shows once again how important it is to know the connections and not just speculate wildly. What happened? A reader posted in the forum about his clogged system and the traces he found when dismantling it. There was a greenish-looking deposit in the GPU water block and snow-white deposits and crumbs in the last radiator.
What is surprising here in the reader’s description are the two locations. The pump itself was still clean, but the GPU cooler was slimy, the following CPU cooler was only slightly affected, the first radiator was not affected at all and the white deposit was only found on the last radiator. The radiators are full copper radiators from Alphacool and the GPU water block is an older model from Bykski for a GeForce GTX 1060. The fittings come from Alphacool and are made of brass. I realized pretty quickly that these must be two completely different things, the causes of which were not the same.
Cooler of horror?
We can now see from the picture below that the GPU block uses a jetplate and that part of the acrylic has been cut out and covered with a metal plate, which was also in active contact with the water. We have already noted these two parts, as they will unfortunately play a significant role. However, they do not explain what we see as contamination in the block.
In the case of green deposits, algae or verdigris is generally assumed far too quickly, because as long as the fun is still damp, you can see very few details. But I’ll come to that in a moment. First of all, let’s note that yellow-greenish slime is the predominant deposit in the radiator.
Incidentally, this can also be found on the germinated jetplate, and not too little:
However, since I can hardly analyze liquids and slimy stuff in a meaningful way, I first air-dried the block as quickly as possible in a ceramic washbasin with plenty of hot air to minimize the impact of environmental influences on the layer. Why ceramic? At over 70 °C, it is simply hot to the touch. If you still believe in algae: they would be dead as a doornail. Small life hack….
An initial test of the water block in a rather clean area did not reveal any major anomalies apart from a low-grade nickel plating. It is copper. Even if I don’t like the sodium in the depth of the hole.
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