MSI X79A-GD45 (8D) series User Manual page 62

BIOS Setup BIOS Setup
▶ tRAS
Determnes the tme RAS (row address strobe) takes to read from and wrte to mem-
ory cell.
▶ tRFC
Ths settng determnes the tme RFC takes to read from and wrte to a memory
cell.
▶ tWR
Determnes mnmum tme nterval between end of wrte data burst and the start of a
pre-charge command. Allows sense amplfiers to restore data to cell.
▶ tWTR
Determnes mnmum tme nterval between the end of wrte data burst and the start
of a column-read command; allows I/O gatng to overdrve sense amplfies before
read command starts.
▶ tRRD
Specfies the actve-to-actve delay of dfferent banks.
▶ tRTP
Tme nterval between a read and a precharge command.
▶ tFAW
Ths tem s used to set the tFAW (four actvate wndow delay) tmng.
▶ tWCL
Ths tem s used to set the tWCL (Wrte CAS Latency) tmng.
▶ tCKE
Ths tem s used to set the Pulse Wdth for DRAM module.
▶ tRTL
Ths tem s used to set Round Trp Latency settngs.
▶ tXP
Ext Power Down wth DLL on to any vald command; Ext Precharge Power Down
wth DLL frzon to commands not requrng a locked DLL.
==Advanced Tmng Configuraton==
Follwng tems are used to set the read/ wrte tmngs for memory.
▶ tRRDR
Read-Read Dfferent Rank, same DIMM.
▶ tRRDD
Read-Read Dfferent Rank.
▶ tWWDR
Wrte-Wrte Dfferent Rank, same DIMM.
▶ tWWDD
Wrte-Wrte Dfferent Rank.
▶ tRWDRDD
Read-Wrte Dfferent Ranks same or Dfferent DIMM.
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