Gigabyte GA-P55-UD5 User Manual page 47

>>>>> Channel A/B Advanced Timing Control
tRC
Options are: Auto (default), 1~63.
tRRD
Options are: Auto (default), 1~7.
tWTR
Options are: Auto (default), 1~31.
tWR
Options are: Auto (default), 1~15.
tWTP
Options are: Auto (default), 1~31.
tWL
Options are: Auto (default), 1~10
tRFC
Options are: Auto (default), 1~255.
tRTP
Options are: Auto (default), 1~15.
tFAW
Options are: Auto (default), 1~63.
Command Rate(CMD)
Options are: Auto (default), 1~3.
>>>>> Channel A/B Misc Timing Control
Round Trip Latency
Options are: Auto (default), 1~255.
- 47 - BIOS Setup