Intel ATC6430M - Manual (Page 29)

Chapter 3 Award BIOS Setup ATC6430M Mainboard
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page miss. Open: it will precharge bank during the service of a page miss.
RAS-to-CAS Override By CAS# LT: the RAS-to-CAS delay timing will be the same
as item of CAS# Latency. Override: the value will be fixed in 2.
RAS# Timing This item controls the active time of RAS# and bank cycle time.
“Fast” gives faster performance and “Slow” gives more stable performance.
RAS# Precharge Timing If an insufficient number of cycles is allowed for the RAS
to accumulate its charge before DRAM refresh, the refresh may be incomplete and the
DRAM may fail to retain data. “Fast” gives faster performance and “Slow” gives more
stable performance.