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simple question about bus speed and ram speed

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Hello, Does a processors bus speed refer to how fast of ram that can be installed in a machine. I'm just wanting to confirm that a processors northbridge speed refers to the speed of ram that can be installed on a computer. I have a laptop with a 2 ghz processor and it's bus speed is 800 mhz. It currently has 1 gig 667, but can I put 800 mhz ram in it? Thanks, Chad

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If I remember right, yes and no. Your motherboard will determine the fastest speed that the RAM can run at. But, you can put the faster RAM in, it just will run at the slower speed. This is because the 800mhz is from the CPU to the Northbridge, the 677 is Northbridge to RAM. I would suggest just staying with the slower ram, as it would probably be cheaper, or try to find the in the manual or online what type of RAM it will use.

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