How to check ram max frequency in laptop?

[y434y1]

This is my first question here, so I would like to say hello to everybody

I would like to modernize my old notebook a little bit by putting into it one more GB of DDR2 memory (4GB instead of 3GB). I already have reinstalled the OS to the 64 bits version - my cpu, Inter Core 2 Duo T8300 supports it (that's what I have discovered during my research).

But there is one thing that bothers me: what is the max ram frequency I can put to my mainboard?

tl;dr
The laptop is Asus F3SA AS134C and I did not find anything about that in the user manual.
I attach screenshots from CPU-Z below:

 

[NerdyComputerGuy]

Source: http://www.arest.pl/produkt/12935/ASUS-F3SA-AS134C-T8300-2-40-3072-MB-250-GB-DVDRW-15-4-WIFI-BT-ATi-HD2600-Vista-HP/wlasciwosci

Memory 3072 MB of DDR2 667MHz SO-DIMM (2,048 MB + 1024 MB)
up to 4096 MB

As you can see your laptop supports up to 4096 MB of memory.

 

[y434y1]

Source: http://www.arest.pl/produkt/12935/ASUS-F3SA-AS134C-T8300-2-40-3072-MB-250-GB-DVDRW-15-4-WIFI-BT-ATi-HD2600-Vista-HP/wlasciwosci

Memory 3072 MB of DDR2 667MHz SO-DIMM (2,048 MB + 1024 MB)
up to 4096 MB

As you can see your laptop supports up to 4096 MB of memory.

Thanks for the interest, but that's not what I was looking for. I meant if I could add 800 Mhz memory stick or even 1066 MHz instead of my 667 MHz 1GB one. Do you know anything about that? I paged through the manual, but there is nothing ram-related there (they only advice to contact the authorized seller). And even the endless source of the wisdom, the internet, do not want me to discover the answer.

 

[NerdyComputerGuy]

I can't find any information on it although your clock speed on the memory doesn't really matter, it doesn't change a whole lot in terms of performance.

If you add a memory stick that is higher than 667Mhz then the motherboard should automatically downclock the memory to work properly with the system.

 

[y434y1]

I bought one 2GB stick, 800 MHz. I only hope that my laptop would not explode after installing it!

 

[NerdyComputerGuy]

I bought one 2GB stick, 800 MHz. I only hope that my laptop would not explode after installing it!

lol, thats not going to happen.

 

[y434y1]

I bought one 2GB stick, 800 MHz. I only hope that my laptop would not explode after installing it!

lol, thats not going to happen.

It looks that it works know. And it got downgraded to 666 MHz. I bet that the only way to check if my laptop supports 800 MHz is to put out the 666Mhz stick. I will give you a sign when I would have the screwdriver.

Here is the new screenshot:

 

[Tradesman1]

Specs say 4GB at 667

http://www.cnet.com/products/asus-f3sa-as064c-15-4-core-2-duo-t7700-vista-home-premium-2-gb-ram-160-gb-hdd/specs/