Haswell / Broadwell Memory control

[Flake87]

If I have this wrong then please feel free to correct me.

As I understand it the X99 chipset has no memory controller, and it is instead on the CPU itself. Intel guarantees the FSB to 2133MHz and therefore even if the memory you buy is rated faster, the CPU may not be able to cope with what is in essence an overclock.

The DDR 4 is a 4 channel configuration so my question is whether the memory controller is divided into 4 'cores' in which some might be faster than others?

What if any processing / control does the motherboard do as it can't possibly be direct connect to the 2011 pins?

 

[Hagar]

If I have this wrong then please feel free to correct me.

As I understand it the X99 chipset has no memory controller, and it is instead on the CPU itself. Intel guarantees the FSB to 2133MHz and therefore even if the memory you buy is rated faster, the CPU may not be able to cope with what is in essence an overclock.

The DDR 4 is a 4 channel configuration so my question is whether the memory controller is divided into 4 'cores' in which some might be faster than others?

What if any processing / control does the motherboard do as it can't possibly be direct connect to the 2011 pins?

The bios has set memory settings higher than 2133 or they can be programmed in manually. Most X99 boards can go to 2800-3000MHz. The allowable memory frequency is a function of the CPU and the motherboard.

DDR4 is a memory standard and it can be in single dual or quad channel configurations. X99 is a quad channel motherboard however you need four or eight sticks of ram to do this.Two sticks would give dual channel, a single stick single channel.

Not sure what you are trying to say in the last statement. The motherboard has a bios chip and other control chips (bridges) between the buses and the CPU.

 

[Flake87]

Looking at the photos of the Haswell chips, there are 4 distinct memory controllers. I know that the memory controller on the CPU can fall over if there is too much data sent between the chip & the memory if the frequency is set too high, but, is this channel specific? Could there be a case where three of the channels run at 3000MHz and one of them by only capable of 2666MHz in the same way cores can perform at different overclocks?