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Any Questions?. Chapter 7-Upgrading Memory. Learn About the different kinds of physical memory and how they work How to upgrade Memory How to troubleshoot Memory Problems. Pg 255. RAM Technologies. Dynamic Random Access Memory Stores data but loses information when powered off Chapter 1

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  1. Any Questions?

  2. Chapter 7-Upgrading Memory • Learn • About the different kinds of physical memory and how they work • How to upgrade Memory • How to troubleshoot Memory Problems Pg 255

  3. RAM Technologies • Dynamic Random Access Memory • Stores data but loses information when powered off • Chapter 1 • RAM is on motherboard-DIMMS, RIMMS, SIMMS • Chapter 5 • Dyanmic and Static RAM • Systems have static RAM Memory Cache Pg 256

  4. RAM Technologies • RAM Chips are modules that plug into motherboard • Difference between modules • Data pathway • Data Path Width • Pins and speed need to match when installing Pg 257

  5. Chip speed vs. Motherboard Speed • Chips used to run asynchronously • Out of sync with motherboard • Newer DRAM chips are synchronous Pg 258

  6. SIMM Technologies • 32 bit data path • 60, 70 or 80 ns Pg 259

  7. DIMM Technologies • 64 bit data path • 168, 184, 240 pin • DDR and DDR2 • Runs twice as fast • Two cycles, one on up swing and one on down • Buffered and Registered • Location of notch will specify • Dual Channeling • Controller can deal with two DIMMS at once Pg 259-262

  8. RIMM Technologies • Direct Rambus DRAM • RIMMS are expensive and slower • All slots must be filled • Continuity chips to fill empty slots Pg 261

  9. Error Checking and Parity • Test the integrity of the signal • Set the final bit to 1 or 0 to make the total odd or even • Makes sure that memory has not been flipped Pg 263

  10. CAS Latency and RAS Latency • Methods to measure speed • How many clock cycles it takes to read a column of data Pg 263

  11. Tin or Gold • Try to match the motherboard to the module Pg 264

  12. Speed • Many factors, many ways to measure • Ns, MHz, PC Rating, Latency • Error checking and buffering can affect performance • Need to understand PC rating • bandwidth Pg 264

  13. Speed • How much RAM is installed • Memeory Technology in use • Speed in Ns, MHz, • ECC/Parity, non-parity • CL or RL rating • Dul Channleing Pg 264

  14. Upgrading Memory • Physically Add RAM chips • How much do you need • Depends on OS an usage • What is installed • How many slots are there • How many are full • What kind of memory can I get • Depends on Motherboard Pg 265-267

  15. Installing Memory • Watch out for static • SIMMS • Install at angle and then straighten • RIMMS • Begin with bank 0 and go up • If a C-RIMM (continuity Chip) is in place, remove it • DIMMS • Check the nocthes and pull arms back. Pg 275

  16. Installing Memory • Watch Video Pg 275

  17. Troubleshooting Memory • Upgrade Problems • System doesn’t see new memory • Recurring Problems • Sysytem Locks up • General Protection Fault (Blue Screen) Pg 275

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