A closer look
The blue heatspreaders are made from aluminum. During heavy use and overclocking the memory gets quite warm, so they actually seem to be helping memory temperature.
On the sticker you find information about the module size, timings and voltage. This is exactly the information you want when you are installing them into a system and don't want to look in the manual.
The #808 Brainpower PCB is used by almost all DDR Modules, from many manufacturers. This PCB is among the best on the market.