IgorsLAB checked out the Alphacool Eiswolf 2
A quote from the article:
The market for all-in-one water cooling solutions for graphics cards is still abundantly manageable compared to CPU coolers, although the potential gain over air cooling is significantly higher. Higher boost steps and lower operating noise are only part of the reward, because all other components of the graphics card board also benefit from such cooling.Alphacool Eiswolf 2 Review