By Snuffy09 ·
Is the notch in a memory stick relative to what speed it is?

will the notch on a 333mhz stick line up with a 266mhz stick?

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Type Of RAM

by TheChas In reply to Memory


The notches in the connector side of a DIMM module help make sure that you do not mix the different types of DIMMs and use them in the wrong sockets.

Even though the DIMMs for desktop computers are the same length, they are very different.

SDRAM DIMMs have 168 pins

DDR DIMMs have 184 pins

DDR2 DIMMs have 240 pins

Each has their notch in a specific location so that you cannot install the wrong type of DIMM for the socket you have.

I did not follow them, but it looks like Jacky Howe gave you some good links for more details.

Kingston had a very good booklet on the different types of RAM that you could download.

Then, once you get past the different types of RAM, what speed and density of RAM within the type that matches your motherboard depends on the hardware design and the BIOS.

As higher speed RAM often has higher CAS latency numbers, there is no benefit to installing RAM that is faster than what your motherboard and CPU support.

Yes, your CPU front side bus speed can limit your RAM speed and vica-versa.


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