Ram speed appears 10% higher?

[jobo789]

Ok, so I have 16GB worth of this Corsair 1600mhz RAM:

Link

Now, when i ran CPU-Z i noticed that it wasn't running at 1600mhz, it was running at something like 1440mhz which confused the hell out of me. So i went into the Bios and i noticed that the Desired or Target speed listings were all 10% higher than they should be (1333, 1600 1866 etc.)

So i set it to 1760mhz and adjusted the timings to what they should be for 1600mhz. I check CPU-Z and sure enough it's running at 1760mhz:

The DRAM voltage is currently set to 1.5v as recommended.

What is going on? Why is my RAM appearing to be overclocking itself?

SPECS:
AMD FX8350 OC'd to 4.4Ghz on a Asus M5A87 MOBO
XFX 7950
16GB Corsair Vengeance 1600mhz
Powercool 80+ 750W PSU

CPU OC Settings:

(Ignore my CPU Temp I know i should get a 990 chipset MOBO)

 

[HEXiT]

looks like your running the ram off the auto multiplier thats tied to the cpu frequency.
go into your northbridge settings and you should find the ram bootstrap multiplier adjust it down till your ram gets closer to 1600.