RAM speed underclock?

[xxgamxx]

I'm curious as to why my ram speed is 666mhz when it's supposed to be 1333mhz

My ram:

G.SKILL 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Dual Channel Kit Desktop Memory Model F3-10666CL9D-4GBNQ

pc specs

Manufacturer:
GFilms
Processor:
Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz (4 CPUs), ~2.8GHz
Memory:
GSKILL 4GB DDR3
Hard Drive:
Samsung Spinpoint F3 500 GB
Video Card:
Sapphire HD 5770 1 GB GDDR5
Monitor:
Alienware OptX™ AW2210 21.5 HD
Sound Card:
Speakers/Headphones:
Fatality
Keyboard:
Razer Tarantula
Mouse:
MX518
Mouse Surface:
Steel Series
Operating System:
Windows 7 Ultimate 64-bit (6.1, Build 7600) (7600.win7_rtm.090713-1255)
Motherboard:
GIGABYTE GA-EP45T-UD3LR
Computer Case:
Roswell CHALLENGER

 

[COLGeek]

What you are seeing is correct. You need to double the number to get your speed. Your system is using the memory at 1333 settings (if you looked at in your BIOS you would see that as well). You are good to go.

 

[Wolygon]

Yeap as said you double the speed shown in CPU-Z to get the equivalent speed. This is because the RAM is DDR (double data rate).

 

[xxgamxx]

Oh alright. One last question, if i over clocked it...which I doubt I coud, what type of improvements would i see?

 

[COLGeek]

Minimal at best. Not much gained from OCing memory. CPU and GPU OCing is where you see the most impact. If not careful you can make the whole system unstable.