I already had a set of 16 GB and I bought another one, totaling 32 GB.
Don't tell me stupid things that it's low speed... it's excellent! Anyway, there are no applications that require such speed.
And if you find the dark ones that don't work... you can use XMP and you're good to go!

With the MSI Gaming M7 and i7 6700k, they work perfectly fine. The following also say it, and I believe it is accurate at 110. It would be a good price at 90-100 as well. They are also beautiful.

Update 17/12/17: I was looking to get 2 more modules to make it 32 GB since I am already satisfied with the dual channel and I see 200 EURO, guys?

I have been using the aforementioned set for about 6 months without any temperature or freezing issues, timed at 2400MHz from XMP Profile 1. With a Z170 chipset and i7 CPU, they easily handle higher timing and additional voltage, while the 16GB is almost enough for everything. Although the price is a bit high, G.Skill memories are worth it!