Apistek Shows Off Peculiar Water Cooling Concepts
Apistek is showed off some interesting new water cooling concepts at Computex. There are three products that have caught particular attention, among which are two water cooling reservoirs as well as a graphics card water block.
Starting off with the water block, it is a full water block intended for the dual-GPU Radeon HD 7990. The unit features two fully independent copper and acetyl made GPU blocks, and is accompanied by a larger heat spreader to cool the VRMs and memory.
The next product that was shown was a water cooling radiator. It should also act as a pump and a reservoir, and is an external unit. Since it is quite small, it appears that to create adequate cooling power there is still a need for fans, which spin around it to dissipate the heat. The unit is 370 mm tall. 
Lastly, a larger reservoir was shown. This one is a whopping 800 mm tall, reaching up above your desk. The unit doesn't have any cooling fans, but it does have a built-in pump, and due to its size it also acts as a reservoir. 
There was no word on when the units would hit retail, or if they would even come to the market in the first place. There was no word on pricing either.
The tall radiator, however, might be a convenient option to add a little extra cooling to a lot of our loops. I know I'll be building a dedicated radbox in the future, and this might just replace that.
The external "tube" with fins is likely extruded aluminum but I doubt that this company is dumb enough to not have a copper core that comes in contact with the fluid in the loop.
Galvanic corrosion is when you have two dissimilar metals come in contact with each other. Unless you live in a tropical-coastal region with lots of salt in the air/humidity (Hawaii?) you shouldn't have problems. You're more likely to see this when a fastener is using a different metal.