Why is my bus speed reduced to 99.98MHz when I set XMP timings?

[Peddeh]

Hello,

wasn't sure which section to start this thread, so I apologise if it's wrong.

I fully well understand that this is such a small difference, I shouldn't worry about it, but it's still something I'd like to have explained.

To start with this is the setup:
Rampage IV Black Edition
i7-4930K
16GB Corsair Dominator Platinum (CMD16GX3M4A1866C9)

Basically the problem is, whenever I apply the XMP profile or enter the the timings myself manually, the bus speed is always reduced to 99.98MHz. I had this issue with an old Kingston kit, and assumed I should opt for RAM on the QVL.

I see a lot of people who own 4930Ks with a 100MHz bus, so it kinda troubles me. Am I doing something wrong?

I would greatly appreciate it if someone could explain to me what's happening in layman words.

 

[maniac]

so you're saying you're worried cause you're getting 99.98Mhz when you should get 100Mhz.....................?

 

[Cru]

so you're saying you're worried cause you're getting 99.98Mhz when you should get 100Mhz.....................?

yes he is