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Memory Install

By jbeaucaire ·
I have an old Dell Dimension that I want to put some additional memory into it. It is rated at 100 Mhz & the memory I have is 133. If I install it will it work?

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by TheChas In reply to Memory Install


You can always run memory at a slower clock speed.

The bigger issue for installing memory in older PCs is is the motherboard capable of handling the density of the new RAM modules.

The SDRAM specification has evolved over time.
Original DIMMs were of a single density construction.
Then came double density.
The newest DIMMs are quad density.

The easiest way to see if your PC133 DIMM will work is to try it.

If it is not compatible, the RAM test at boot will only see 1/2 or 1/4 of the DIMM capacity.

If the BIOS see's the correct amount of RAM, there can still be errors when Windows boots if the new DIMM is not fully compatible with your motherboard.

Keep in mind that older motherboards have assorted maximum RAM limits.
Yours could be limited to 128MB or 256MB per DIMM.

Windows 9X and Me also have a RAM limit.
I NEVER install more than 384MB on a 9X system.


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by jbeaucaire In reply to

Thank you. I will install the memory & see if it will work

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by cp7212 In reply to Memory Install

Another thing is that RAM always runs at the slower clock speed. In your case, if you have a stick that runs at 100 Mhz and one that runs at 133 Mhz, the overall speed of both sticks will be 100 Mhz.

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by jbeaucaire In reply to Memory Install

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