Product Search: Memory Upgrades Flash Cards & Readers Video Cards USB Flash Drives Other Upgrades Software Contact Us | Shipping | About Us | FAQ | Order Status International Customers Choose country Australia Canada Canada - français Deutschland EEUU - español España France Italia Japan Nederlands New Zealand United Kingdom United States Other countries United States Memory Upgrades >> PC3200 (DDR400) PC2700 PC2100 PC133 PC100 More Choices Flash Memory Products >> CompactFlash™ MultiMediaCard™ Secure Digital™ SmartMedia™ Memory Stick® Card Readers Gizmo! USB Flash Drives Crucial Video Cards >> 64MB RADEON 9200 SE 128MB RADEON 9200 128MB RADEON 9600 Pro 128MB RADEON 9800 Pro 256MB RADEON 9800 Pro More Great Products Crucial Gear Software Other Upgrades Which speed and memory technology should I buy? In general, you should match the speed and type of memory technology that is already in your system. If you don't know exactly what type of memory you currently have, don't worry; any of the modules listed in the Memory Selector™ for your system should work fine. Common types of memory technology include fast page mode (FPM), extended data out (EDO), synchronous dynamic random access memory (SDRAM), and double data rate SDRAM (DDR or DDR SDRAM). Most systems will accept only one type of memory technology. (The very few motherboards that can accept more than one type of memory will only allow you to use one type at a time.) Memory speeds are written in different formats depending on the type of memory technology your computer uses. FPM and EDO speeds are written in nanoseconds (ns). SDRAM and DDR speeds are written in megahertz (MHz) or with a "PC" rating. It may seem confusing, but faster memory will NOT necessarily make your system faster. Your computer will only run as fast as the "slowest link" in your system, so you can't speed up your computer by adding faster memory. The way to make your system faster is to add more megabytes (MB) of memory. Here's a rough guide to relative memory speeds. Remember, it's best to match the memory that is currently in your system. « back FREE shipping on qualified orders. For a limited time, qualified orders from Crucial.com receive free second-day shipping within the contiguous US. (Important details) The Crucial Library Browse our library for in-depth articles about our products and industry. Need help? Talk to an expert, search our FAQs, or contact technical support here . Free e-mail newsletter Enter your e-mail address below: Customer comments We're proud that we have some of the most satisfied customers in the industry. You can read the comments they've sent us or see how they've rated us at independent sites like: Crucial benefits for: Businesses Government/Education Resellers OEMs/Designers Affiliates Policies Warranty Legal Security © 2004 Micron Technology, Inc. Crucial Memory RAM Upgrade for PC