Problems reading speeds, need guidance

Hi everyone, not new here, but can't remember if i ever posted before.

Well, i own a Clevo D900/1C (could never figure out if it was 900 or 901).
Details:
Core 2 Quad Q9650
4GB DDR2
300GB HD
NV9800M GTX

Fully functional, i'm very happy with it. Some BSOD every now and then, but i blame it on Vista.
The thing is i ran CPU-Z and i have some "weird" readings. I say "weird" because i don't know if they are ok or i'm missing something. To the point:

Main CPU-Z Screen, CPU Tab, second half: Clocks (Core #0)
Core Speed: 1995MHZ (same for every Core)
I can read the CPU model correctly, Intel(R) Core(TM)2 Quad CPU Q9650 @3.00GHZ, but i don't understand why speed is @2GHZ. Is this normal? Does it "speed up" when required? Don't understand much about it, any guide, link, help would be appreciated.

CPU-Z, Memory Tab, Timings
DRAM Frequency: 399MHZ
I have 2 Kingston PC2-6400, shouldn't they be running @800MHZ?
Model is KHX6400S2LL/2G, 5-5-5-18

If anyone with more knowledge than me (i think most of the people here) could point me just to know if i'm running things as they should i would be very grateful. As i said, i'm very happy with it, but i wanna make sure i have everything set up correctly.

Thanks in advance,

Yabran

 

The RAM is DDR ram (Double Data Rate) hence 399MHz actual = 798MHz effective.

The CPU should clock up when necessary, try running a stress test program such as prime95 and check CPUZ then.

 

thanks theriko, i'll download/get prime95 and see what happens. With your answer i'm already somewhat more relaxed about it, but i'll check it anyway and come back with the results.
Thanks

 

you were right indeed

thanks