3200MHz if powered at 1.35V: a bit of a scare on start-up
Nickel installation, but they start at 2100 MHz when powered at 1.2 V (default). Finally, if you dig a bit into the bios, you'll find that they run well at 3200MHz if you power them at 1.35V, although your CM and bios must have this option, and LDLC doesn't tell you that!
As a result, they consume more power and heat up a bit more, even if this is marginal compared to the CPU or a video card.