PC8500 Memory recognized as PC6400

[Gimp]

CPUZ has told me my memory is recognized as PC6400 instead of PC8500. I have this memory here http://http://www.newegg.com/Product/Product.aspx?Item=N82E16820220314

I'm assuming that I have to do something in the BIOS in order to fix this... Now I can get around in the BIOS... but I don't have the knowledge of what to change. If someone could give me a step by step process, that would be fantastic.

My setup is as follows:
Antec TPQ-850
Asus M3A79-T Deluxe Motherboard
2- 1GB Sapphire Radeon 4870 running CrossfireX
AMD Phenom x4 9950 @ 2.6 ghz
2- 640GB Seagate HDD
2- Sony 20x DVD +/-RW
Acer 22" Widescreen Monitor (1680x1050)

[ApPy10]

Hello , Nothing really serious about it , just go into your BIOS and adjust the voltage, timings and DRAM frequency to what your memory should be and you should be ready to go.

[Gimp]

I don't know what the timings should be at, and I'm not sure which values to change