A Closer Look
Stacking the memory is not a simple task, as the heat spreaders are fairly thick. But since we only do that for fun, it is by no means an issue. The spreaders feel very solid and are constructed of aluminium. The two separate parts are held in place by screws. It is nice to see such a unique design on the DIMMs from G.Skill.
The kit has fins above the memory PCB. G.Skill has removed the fins in the middle of each spreader. While such a construction may be beneficiary when trying to keep things cool, such large fins may get in the way of some CPU coolers. A red and black label spans the main side of the heat spreaders, while the rear only holds an informative sticker and a seal which covers one of the screws. This means you will not be able to remove the aluminium spreaders without voiding your warranty.
You will find the G.Skill logo and the memory model name on the front sticker of the modules. This, in combination with the unique heat spreader shape should make it easy to identify their memory within a system.
As mentioned before the heat spreaders are not symmetrical when looking at them from the side. As you can see, one side is thicker than the other and the fins become higher from left to right. There are no special markings on the PCB besides the "KO-8117", which can be found on many high-end DDR3 kits on the market these days.
Even though the memory modules are very thick, installing them right next to each other does not pose a problem. This means that you should easily be able to populate all DIMM slots on your mainboard. You should just check if your CPU cooler does not interfere with the heat spreaders.