PureOverclock posted a review of the XSPC 5870 Razor GPU water block
A quote from the article:
>> XSPC 5870 Razor GPU Water Block Review
The XSPC Razor 5870 full cover GPU water block is very sleek and slim, designed to keep your lighting fast Radeon HD5870 graphics card cool as a cucumber. Temperatures are improved but so is overclocking potential so let's find out just how well the 5870 Razor performs.
>> XSPC 5870 Razor GPU Water Block Review