XFX 650I - Manual (Page 59)

Configuring the BIOS
45
Expert
Use the
Page Up and Page Down keys to select Expert . When Expert
is selected, all timing categories are enabled for manual input. Note that
you should set the value to Optimal to use the manufacturers’
recommended values.
tCL : CAS# latency (options are 1 through 6).
tRDC : RAS#-to-CAS# Delay for Read/Write commands to the
same bank (options are 1 through 7).
tRP : Row Precharge time. This is the Precharge-to-Active or Auto-
to-Refresh of the same bank (options are 1 through 7).
tRAS : This is the minimum RAS# active time (options are 1 through
31).
Command Per Clock : This is the command timing setting on a per
clock unit basis (options are 1T and 2T).
tRRD : RAS#-to-RAS# delay of different banks (options are 1
through 15).
tRC : RAS#-to-RAS# or auto refresh time of the same bank (options
are 1 through 31).
tWR : The Write recovery time (options are 2 through 7).
tWTR : This is the minimum write-to-read delay with the same chip
selected (options are 1 through 10).
tREF : This is the DRAM refresh rate (options are Auto , 7.8uS , and
3.9uS ).
Parameters Settings Current Value
Memory Timing Setting [ Expert ]
tCL (CAS Latency) [Auto(5)] 5
tRDC [Auto(7)] 5
tRP [Auto(7)] 5
tRAS [Auto(23)] 18
Command Per Clock (CDM) [Auto(2T)] 1T
** Advanced Memory Settings **
tRRD [Auto(4)] 3
tRC [Auto(28)] 22
tWR [Auto(7)] 5
tWTR [Auto(10)] 9
tREF [Auto] 6.1uS