First design for a NVIDIA 280GTX block

[MpG]

you dont need definite results. Its physics. putting dents in the block increases surface area. Increase surface area = more area for water -> block transfer -> better cooling.

Only problem is unless AC makes the channel path larger, it wont matter. :\

I don't doubt that the beading helps, I was simply curious as to what the degree of improvement was. With the Ione blocks, DD seemed to actually be relaying on it (and a low pressure drop), since the internals were so minimal. As opposed to say, the EK design, which used a greater concentration of cooling fins directly over the heat source(s). Unfortunately, I haven't stumbled across any actual comparisons.