Can I fully utilize DDR2 800MHz memory on my Compaq 6720s laptop?

Hello,
I have Compaq 6720s (KU232ES) laptop (with integrated graphics).
CPU: Intel Core2Duo T5470
RAM: DDR2 PC-6400 800MHz MB: based on GM965 Express chipset.
On intel site I can see that both given CPU and MB chipset supports FSB800, but in spite of 800MHz system memory installed I can see in CPU-Z that it works with 667MHz frequency.
Really, in quickspecs it is mentioned that DDR2-533/667 are supported, nothing about 800.
I can't find related BIOS settings and can't find any BIOS update fixing this.
I'm wondering why I can't fully utilize DDR2-800 taking into account that all(?) relevant laptop nodes support this frequency?
Can somebody explain this to me please?
Thank you

Hi,
Please let me take and example: you have a fast car but the road allows only slower cars to run. What you can do ? You have to buy slower car (or waste money with fast car) or you have to build a new road.
Regards.
BH
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Hi:
That is correct.
The mobile intel version of the 965 chipset only runs the memory at 667 MHz and the desktop version of the 965 chipset runs the memory at 800 MHz.
A little known fact but it is what it is. See page 12 of the datasheet below.
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Quote from: Stu on 05-August-08, 06:25:23
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Can I fully utilize DDR2 800MHz memory on my Compaq 6720s laptop?

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