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Chapter 36. Upgrading Your PC's Memory > Different Types of Memory

Different Types of Memory

Memory modules that physically appear to be the same can differ dramatically in the actual speed of the memory and the type of memory used in the module. This is why it is very important to install only the exact type of memory designed for your PC. You can consult your PC's manufacturer or your user guide to determine the exact type of memory you can use in your system especially if you are upgrading a slightly older PC. Most of the newer memory being sold is with bus speeds of 133MHz. A lot of this memory won't work in older Pentium PCs, which usually have a maximum bus speed of only 100MHz. Check your memory speeds carefully.

Here is a brief overview of some of the types of memory you may encounter, both in older style SIMMs and newer style DIMMs:


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