ASROCK X48TURBOTWINS User Manual page 58

DRAM tRAS
This controls the number of DRAM clocks for TRAS. Configuration options:
Configuration options for DDR2 memory modules are [Auto], [9 DRAM
Clocks] to [17 DRAM Clocks]. Configuration options for DDR3 memory
modules are [Auto], [9 DRAM Clocks] to [30 DRAM Clocks].
DRAM Command Rate
This option only appears when you adopt DDR3 memory modules. This
controls the Command Rate timing for DDR3 memory. Configuration
options: [Auto], [1N] and [2N].
XMP Technology
This option only appears when you adopt DDR3 XMP (Xtreme Memory Profiles)
memory modules. The default value is [Auto]. You may select Profile 1 or
Profile 2 and follow the recommended value to adjust the overclocking mode.
For example, when you select Profile 1, please follow the string shown on the
screen (Profile 1 : DDR3 1600 8-8-8-28 1.80V) to set up the options "DRAM
tCL" to [8], "DRAM tRCD" to [8 DRAM Clocks], "DRAM tRP" to [8 DRAM
Clocks], "DRAM tRAS" to [28 DRAM Clocks], and "DRAM Voltage" to [1.80V].
Primary Graphics Adapter
This allows you to select [PCI] or [PCI Express] as the boot graphic adapter
priority. The default value is [PCI].
OnBoard HD Audio
Select [Auto], [Enabled] or [Disabled] for the onboard HD Audio feature. If you
select [Auto], the onboard HD Audio will be disabled when PCI Sound Card is
plugged.
Front Panel
Select [Auto], [Enabled] or [Disabled] for the onboard HD Audio Front Panel.
OnBoard Lan
This allows you to enable or disable the "OnBoard Lan" feature.
OnBoard 1394
This allows you to enable or disable the "OnBoard 1394" feature.
CPU Voltage
Use this to select CPU Voltage. Configuration options: [Auto] and [Manual].
The default value of this feature is [Auto].
DRAM Voltage
Use this to select DRAM Voltage. Configuration options for DDR2 memory
modules: [Auto], [1.79V], [1.85V], [1.90V], [1.96V], [2.02V], [2.08V], [2.14V],
[2.20V], [2.31V], [2.37V], [2.42V], [2.48V], [2.54V], [2.60V], [2.66V] and
[2.72V]. Configuration options for DDR3 memory modules: [Auto], [1.47V],
[1.53V], [1.59V], [1.65V], [1.71V], [1.77V], [1.83V], [1.88V], [1.95V], [2.05V],
[2.11V], [2.17V], [2.23V], [2.29V], [2.34V] and [2.40V]. The default value of
this feature is [Auto].
5 8 5 8 5 8
5 8 5 8