ASRock P55 Extreme User Manual - Page 57

CPU Ratio Setting If the ratio status is unlocked, you will find this item appear to allow you changing the ratio value of this motherboard. QPI Frequency Use this option to adjust QPI (QuickPath Interconnect) frequency. Configuration options: [Auto], [4.800GT] and [4.266GT]. The default value is [Auto]. DRAM Frequency If [Auto] is selected, the motherboard will detect the memory module(s) inserted and assigns appropriate frequency automatically. You may select [Auto], [400MHz (DDR3 800)], [533MHz (DDR3 1066)], [667MHz (DDR3 1333)], [800MHz (DDR3 1600)], [933MHz (DDR3 1866)] or [1066MHz (DDR3 2133)]. XMP Technology Use this option to adjust XMP memory. Configuration options: [Profile 1] and [Profile 2]. The default value is [Auto]. DRAM Timing Control Use this item to control DRAM Timing. BIOS SETUP UTILITY Advanced DRAM Timing Control DRAM tCL DRAM tRCD DRAM tRP DRAM tRAS DRAM tRFC DRAM tWR DRAM tWTR DRAM tRRD DRAM tRTP DRAM tFAW DRAM Command Rate DRAM Enhanced Training 8 [Auto] 8 [Auto] 8 [Auto] 20 [Auto] 48 [Auto] 8 [Auto] 4 [Auto] 6 [Auto] 5 [Auto] 21 [Auto] [Auto] [Auto] DRAM tCL Min = 6 Max = 11 +F1 F9 F10 ESC Select Screen Select Item Change Option General Help Load Defaults Save and Exit Exit v02.54 (C) Copyright 1985-2005, American Megatrends, Inc. DRAM tCL Use this item to adjust the means of memory accessing. Configuration options : [Auto], [6] to [11]. DRAM tRCD This controls the number of DRAM clocks for TRCD. Configuration options: Configuration options: [Auto], [3] to [15]. DRAM tRP This controls the number of DRAM clocks for TRP. Configuration options: Configuration options: [Auto], [3] to [15]. DRAM tRAS This controls the number of DRAM clocks for TRAS. Configuration options: 57