Memory speed difference between CPU-Z and GPU-Z

[Sunspark]

On my system, if I use the automatic memory timings in the bios it will display the memory speed as bios 1866 using 1.33x14. In CPU-Z this is displayed as 1:6 FSB : RAM. In GPU-Z the memory clock is displayed as 933 which I guess makes sense since 933x2 is 1866.

If I change it to 1.33x12 it will be displayed as 1600 in the bios but memory clock 800 in GPU-Z, so 1600 if doubled.
If I change it to 1.00x16 it will be displayed as 1600 in the bios but memory clock 1066 in GPU-Z and DRAM frequency 798.4 1:8 in CPU-Z.

What I am not understanding here is if the bios is saying the memory speed is 1600 for both, how is GPU-Z coming up with 1066 for the 1.00x16 line? Shouldn't it also be 800?

Thanks for the great utility.

 

[W1zzard]

This could be a reading error. What's the CPU and motherboard used?

 

[Sunspark]

Hi, the CPU is an Intel Core i5 5250U and the motherboard is Intel's NUC5i5RYB board.

I will also mention that changing the multiplier to 20x 100 MHz to make the memory speed 2000 MHz the number is reported in GPU-Z as 1333 for the memory clock. So I'm thinking it only knows about 133 MHz and not 100 MHz, because when I do the math, e.g. 133x16/2 I get 1066. So it's assuming 133 when it's actually 100 for that manually set value.