First of all, I said something because I made an operating error due to a misunderstanding in the product name: The article is actually a set of 2 bars of 4 GB each and not a single strip of 8 GB as I thought originally. Fortunately Amazon resumed without difficulty my 2 articles ordered too; thank you for that.
On the other hand, I have installed on an ASUS P8P67 B3 and I had to manually force the BIOS to recognize DDR3 1600 if they remained in 1300.
So be careful to check the BIOS after installation as well as in Windows if your new modules are not clamped due to misconfiguration.