Abit IS7-G User Manual

Also see for IS7: User manual

Contents

Abit IS7-G User Manual Manual pdf 64 page image

3-10 Chapter 33-4. Advanced Chipset FeaturesDRAM Timing Selectable:This item sets the optimal timings for the following four items, depending on the memory module you areusing. The default setting “By SPD” configures these four items by reading the contents in the SPD(Serial Presence Detect) device. The EEPROM on the memory module stores critical parameterinformation about the module, such as memory type, size, speed, voltage interface, and module banks. CAS Latency Time:This item controls the latency between the DRAM read command and the time that the data becomesactually available. Act to Precharge Delay:This item controls the number of DRAM clocks used for the DRAM parameters. DRAM RAS# to CAS# DelayThis item controls the latency between the DRAM active command and the read/write command. DRAM RAS# Precharge:This item controls the idle clocks after issuing a precharge command to the DRAM.System BIOS Cacheable: (For IS7-G, IS7, IS7-E, and IS7-M only)When set to [Enabled], accesses to the system BIOS ROM addressed at F0000H-FFFFFH are cached,provided that the cache controller is enabled. The larger the range of the Cache RAM, the higher theefficiency of the system will be.Video BIOS Cacheable:As with caching the system BIOS, enabling the Video BIOS cache will allow access to video BIOSaddressed at C0000H to C7FFFH to be cached, if the cache controller is also enabled. The larger therange of the Cache RAM, the faster the video performance will be.IS7 Series