EPOX Pentium 4 Processor based AGP 4X mainboard User Manual download pdf (Page 60)

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DRAM RAS # to CAS # Delay

This field lets you insert a timing delay between the CAS and RAS strobe

signals, and you can use it when DRAM is written to, read from, or re-

freshed. Faster performance is gained in high speed, more stable perfor-

mance, in low speed. This field is applied only when synchronous DRAM

is installed in the system.

Ø The Choice: 4, 3 or 2.

DRAM RAS # Precharge

If an insufficient number of cycles is allowed for the RAS to accumulate its

charge before DRAM refresh, the refresh may be-incompleted, and the

DRAM may fail to retain data. Fast gives faster performance; and Slow

gives more stable performance. This field is applied only when synchro-

nous DRAM is installed in the system.

Ø The Choice: 4, 3 or 2.

Memory Frequency For

This item is select SDRAM Frequency.

Ø The Choice: DDR266, DDR333, DDR320, DDR400 or Auto.

System BIOS Cacheable

Selecting Enabled allows caching of the system BIOS ROM at

F0000h~FFFFFh, resulting in better system performance. However, if any

program is written to this memory area, a system error may result.

Ø The Choice: Enabled or Disabled.

Video BIOS Cacheable

Selecting Enabled allows caching of the video BIOS, resulting in better

system performance. However, if any program is written to this memory

area, a system error may result.

Ø The Choice: Enabled or Disabled.

Memory Hole At 15M-16M

You can reserve this area of system memory for ISA adapter ROM. When

this area is reserved, it can't be cached. The user information of peripher-

als that need to use this area of system memory usually discusses their

memory requirements.

Ø The Choice: Enabled or Disabled.

CPU Frequency The Choice

100~132 AUTO/DDR266

133~199 AUTO/DDR266/DDR333

200~355 AUTO/DDR266/DDR320/DDR400

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EPOX Pentium 4 Processor based AGP 4X mainboard User Manual Page 60