An upgrade, however, it was only with regard to the amount of memory, in fact, it was a complete change of RAM which has thus become necessary simply because I could not buy a second, identical RAM kit my G.Skill Ripjaws as these under the CPU cooler no place would have been, because the fins are too high.
Clear - the motherboard manufacturers have the memory banks mounted a few millimeters added, I would not have had this problem, but the time is now not the case.
So I was looking for a low-profile memory and found it at the Corsair Vengeance Low Profile. The four memory modules installed, PC started, memory is immediately recognized in the BIOS correctly, set frequency to 1600 MHz, stored settings and that's about it.
Since then, the system runs fast, stable and completely without any crashes. Overclocking does not interest me personally, because for me the - are performance gains in proportion to heat more development, power consumption, possibly wear etc. - mind you practical.
My system (bezgl any compatibility issues.): ASUS P8P67 Deluxe, Intel Core i7 i2600, Thermalright Venomous X.