Originally Posted by Juggalo23451
This is why I just get the card its self and then get a aftermarket waterblock like koolance.
PeteJM, I’m sorry to hear about your troubles. I had originally planned to get the EVGA Hydro Copper Waterblock for my GTX 690s, but I got tired of waiting for them to be released. I went with the Koolance VID-NX690 waterblocks instead. I also had an issue mounting the Koolance waterblocks, although it wasn’t frustrating and disappointing like your experience.
The Koolance instructions invite you to reuse the stock screws if they fit. As a result, I initially reused some of the stock Torx screws as well as the spring loaded Phillips screws that surround the GPUs.
However, the stock spring loaded Phillips screws can lead to a problem when you have two cards in Quad SLI. The slight extra downward pressure on the lower block caused by the weight transferred through the connector tubing (bridging the gap between the first and second cards in the water loop) is actually enough pressure to unseat the waterblock from the GPU when using spring loaded screws.
Now I’m sure the stock spring loaded Phillips screws are fine when there’s no possibility of any weight pushing against the stock heat sink, such is the design of the stock air-cooler. However, for the Koolance VID-NX690 waterblocks, I was forced to remount and replace the stock spring loaded Philips screws with the regular washers and screws provided with the Koolance kit.
Like you said, you’ll know right away if one of your GPUs is not seated correctly because your GPU temperature under the smallest load will rocket over 80C, and I’m sure that under any heavier load the card would have shutdown. Fortunately, remounting with the correct washers and screws definitely solves the problem.