Now once I write a short review about the product, which I have just installed with me.
The quality of the product and of the accessories is 1A. The installation can I find a bit too cumbersome because the product is very, really very large and in my motherboard "ASRock Z77 Extreme4" with the 4 Kingston Hyper Predator RAM chips has given extreme problems. I had to remove the passive heatsink with a hair dryer and a screwdriver from the 4 RAM chips, so the cooler at all reinpasst. It logically stops blinking the guarantee of the main memory. That's an extreme MMN negative point, because the motherboard is indeed listed as compatible on the page, but without a warning for "something higher RAM modules". Furthermore, I find it negative that only an English manual is included. And the Austrian from a company? I speak English without any problems for 10 years, but I find it not very appropriate that is not the default language for the operating instructions with it are (German, Spanish, Italian and French).
For the installation and the associated loss of guarantee of the building blocks I subtract 1.5 stars and a deduction of 0.5 stars for not multilingual manual.