Had to find this right after picking up a used Maze5...I wonder how much better this would be than a Maze5 GPU block?

I hate full cover blocks, the differnce between $70 and $120 is huge when buying a $150-$200 video card (your paying $60% of the cards value to improve the cooling? (id rather have a second card for the 40% more)...
Plus with people out there like IandH making beautiful ramsinks it just makes mroe sense to cool the GPU only. These blocks tend to cool the CPU better than a full cover and are re-usable when it comes time to sell your old card. Mem should be ok just on case airflow, just because your cooling with water does not mean you should ditch your case flow fans, noo many other components need to be cooled as well as CPU GPU Mosfets etc...