Question Determining RAM speed options

[9astro]

How do I find out what speeds of RAM will function in my motherboard?

I'm currently searching for replacement cards for a socket p system. CPU-Z says it's using ddr3 right now.

It would be nice to know what is the maximum supported speed and also the maximum that will function at the slower system speed, but it would be best if I knew how to find out, so I won't need to ask again when I'm looking for a different motherboard application.

Thanks

 

[AlHuneke]

I assume you have a custom built desktop system? The data that came with your MB should provide the information you seek. I use Crucial.com for such info. They do list MBs.

 

[9astro]

Hi. Thanks for your reply. My system is a stock laptop. I know how much RAM it can support and that it uses DDR3 cards, but I can't figure out the speeds that it supports and which ones will still work, even though they won't run at full speed.

 

[Wolfshadw]

Would help to know the laptop manufacturer and model number, but you could probably go to crucial.com and find out what is compatible with your system.

-Wolf sends

 

[9astro]

I checked crucial, but their website just said check intel. So, I checked intel and see that the processor bus speed is 1066mhz. So, should I assume that it's the processor and not the motherboard that determines what memory speeds are compatible?

Also, does this mean that higher speed cards will just run at 1066, or does it mean that they won't function at all?