Danger Den ATI waterblocks out shortly Page: 1
Danger Den readying full-cover waterblocks for the HD4850, 4870, and the 4870X2 
Water-cooling enthusiast manufacturer Danger Den are reportedly their lineup of waterblocks for the ATI's HD4000 Series of graphics cards including the 4870X2. Currently there aren't any definite release dates been given other than 'soon', and pricing for the waterblocks is also an unknown at this point. The images below are of the 4870X2 waterblock and the top right is of the 4850 waterblock.
