[airspirit]

Actually, I don't think it will do too bad. In order to make it work I would highly recommend going to a dual output design. If you did that and opened up the exits from the central chamber into the sides non-adjacent to the barbs (top and bottom in your picture) a bit more to allow for better load balancing, I think it would work acceptably. This block will not be a WW by any means, but I do feel that it will perform adequately. While everyone else is bashing the positioning of the central pins, I think it will greatly aid the transfer of heat due to the crazy turbulence it will cause. Yeah, it will restrict flow, but I do think that it will also cause the block to be a decent performer under low flow conditions.

I see what you are doing here: you're trying to have a central chamber devoted to containing the fresh slug of coolant and transferring heat as quickly as possible while simultaneously having a low resistance means of removing the used slug to allow for new coolant.

I'd say go for it. I would probably compare the design efficiency to something around a Maze 3 or comparable block if it is completely made out of copper. It may even do better.

As for the rest of you, give the guy a break. Just because somebody doesn't follow your pet design theory doesn't mean that they're on the path to destruction (gawd I can't get that out of my freakin' head!). The only way we can collectively learn is if people such as Tex try to push us in different directions.