Asus ROG CROSSHAIR X670E EXTREME ROG CROSSHAIR X670E Series BIOS manual Englis - Page 67
DDR and Infinity Fabric Frequency/Timings, DDR Options
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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] [Manual] Follow default setting. 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] [Manual] Follow default setting. 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] [Manual] Follow default setting. 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. ROG CROSSHAIR X670E Series BIOS Manual 67