ASRock Fatal1ty X99M Killer Motherboard

Memory Support

Intel socket LGA2011-v3 CPUs have an embedded memory controller, meaning that it is the processor, not the chipset, which defines what memory technologies you can have and the maximum amount of memory that is possible. The motherboard, however, may have a limitation as to how much memory can be installed.

The integrated memory controller from socket LGA2011-v3 processors officially supports DDR4 memories up to 2,133 MHz. According to ASRock, the Fatal1ty X99M Killer supports memories up to 3,000 MHz.

One of the most important features of the socket LGA2011-v3 processors is the support for the quad-channel memory architecture, which allows the memory to be accessed in 256-bit mode for higher performance. Since each memory module is a 64-bit entity, four memory modules are needed to enable this architecture. If only two or three memory modules are installed, the memory will be accessed under dual- or triple-channel architecture, respectively.

The ASRock Fatal1ty X99M Killer has four memory sockets (two at each side of the CPU socket) and you can have up to 64 GiB with this motherboard if you use four 16 GiB modules.

In order to enable the quad-channel mode, you must install four identical memory modules.

Figure 3: Memory sockets; install four modules for the best performance