User Manual

ROG STRIX X670E Series BIOS Manual
65
SMT Control
Can be used to disable symmetric multithreading. To re-enable SMT, a POWER CYCLE
is needed after selecting the [Auto] option.
Configuration options: [Auto] [Disable]
S3 is
NOT SUPPORTED on systems where SMT is disabled.
DDR and Infinity Fabric Frequency/Timings
DDR Options
DDR Timing Configuration
Active Memory Timing Settings
Configuration options: [Auto] [Enabled]
The following items appear only when Active Memory Timing Settings is set to
[Enabled].
Memory Target Speed
Specifies the memory target speed in MT/s. The valid input is 2000 MT/s, 2400
MT/s, and range of 3200 MT/s ~ 12000 MT/s (stepping of 200 MT/s). The user
input value will be rounded down to align with the stepping of 200 MT/s.
DDR SPD Timing
Tcl Ctrl
[Auto] Follow default setting.
[Manual] Manually specify.
The following item appears only when Tcl Ctrl is set to [Manual].
Tcl
Specifies the CAS Latency. Valid values: 0x16 ~ 0x40, with a stepping
of 2. The value is in hex.
Trcd Ctrl
[Auto] Follow default setting.
[Manual] Manually specify.
The following item appears only when Trcd Ctrl is set to [Manual].
Trcd
Specifies the RAS# Active to CAS# Read Delay Time. Valid values:
0x8 ~ 0x3E. The value is in hex.
Trp Ctrl
[Auto] Follow default setting.
[Manual] Manually specify.
The following item appears only when Trp Ctrl is set to [Manual].
Trp
Specifies Row Precharge Delay Time. Valid values: 0x8 ~ 0x3E, with
a stepping of 2. The value is in hex.