Operating Memory. Part I

For the purpose of marking Random Access Memory (RAM), most users use a simple and capacious name – memory.

The main parameters of BIOS enabling to get the additional increase of the computer’s capacity in a cost-effective manner are various delays, specific operating modes, operation mechanisms and others.

Almost all parameters enabling to control operating memory are located in a section “Advanced Chipset Setup” (Chipset Features Setup). Depending on the type and version of BIOS, the parameters of memory setting may be gathered in a separate subsection which may be called “DRAM Timing Control”. BIOS automatically sets all values for memory parameters by default, depending on the types of set memory modules.

SIMM

FPM and EDO RAM placed on SIMM are outdated ones. But a lot of organizations still use the computers equipped with this type of memory. Nowadays SIMM-modules are rather scarce – they may only be used as their production was stopped about eight years ago. That’s why this kind of memory needs to be optimized.

The parameter “Auto Configuration” (DRAM Auto Configuration, Auto Configure EDO DRAM Tim) controls switching between automatic and manual setting of memory values. This parameter allows indicating one of fixed values of duration terms of data access: 60 ns or 70 ns. To optimize memory manually, set the values “User” or “Disable” for this parameter.

The values “60 ns” or “70 ns” indicate the use of presets which ensure stable operation of memory on the basis of set duration of access cycle. It is clear that soma part of the highest possible productivity is lost.