Gigabyte GA-P55A-UD6 User Manual page 45

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
B2B CAS Delay
Options are: Auto (default), 1~31.
Round Trip Latency
Options are: Auto (default), 1~255.
- 45 - BIOS Setup