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RAM Bus Speeds

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5 replies

by tphillips

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Hi all,

My motherboard has a 133 MHZ RAM bus. I recently put in a new 128 MB RAM module and ever scene then the systems performance has decreased. I then found that this module is at PC100 MHZ, would this inconsistency cause a system slowdown.
Thanks for the help!

5 replies

by djent

Yes! Be happy it works at all. The RAM bus speed defaults to the slowest modual installed which may also cause a shift in CPU clock speed. You need to match RAM speed to the MB Req.

by thechas

Yes indeed, slower RAM will slow down the system.

You need to match speed, refresh rate, and sometimes configuration in order to maximize performance.

If this is a W9X PC, there are also documented slowdowns with high amounts of RAM.

On some benchmark tests, W98 runs fastest with 196MB of RAM.

Sometimes, W9X/Me will not even boot with over 511MB of ram.

Chas

by tphillips

I am using Windows 2K Pro. Is there any third party software available to check the systems memory refresh rate, bus speed etc. I browsed through System Information and didn?t come up with much.

Thanks!

by mrafrohead

SiSoft Sandra will probably give you all of the information that you will be looking for...

If I was you, i would remove the pc100 stick and replace it with a stick of pc133. if using win9x make sure to NOT excede 512MB of RAM... Or your systemcould and probably will give you out of memory errors...

Mrafrohead

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