Hardwarecanucks posted a review of the Thermaltake TMG ND5 8800-series GPU Cooler
A quote from the article:
Thermaltake TMG ND5 8800-series GPU Cooler Review
Thermaltake claims that their TMG ND5 heatsink offers superior cooling and acoustical performance over the stock Nvidia 8-series heatsink and we have found that it does exactly that though to varying degrees of efficacy. The build quality of this heatsink is top-notch and this fact plays itself out to good effect in nearly all of the performance tests.
Thermaltake TMG ND5 8800-series GPU Cooler Review