Asus P7H55D-M EVO - Manual (Page 72)

3-16 Chapter 3: BIOS setup
Chapter 3
3.5.8 DRAM Frequency [Auto]
Allows you to set the DDR3 operating frequency. The configuration options vary with the
BCLK Frequency item settings.
Selecting a very high DRAM frequency may cause the system to become unstable! If this
happens, revert to the default setting.
According to Intel CPU spec, CPUs with a core frequency of 2.66G support the maximum
DIMM frequency of up to DDR3 1333. To use DIMMs of a higher frequency with a 2.66G
CPU, enable the DRAM O.C. Profile feature in BIOS. Refer to section 3.5.1 Ai Overclock
Tuner for details.
3.5.9 QPI Frequency [Auto]
Allows you to set the QPI frequency.
3.5.10 DRAM Timing Control
The items in this menu allow you to set the DRAM timing control features.
The configuration options for some of the following items vary depending on the DIMMs
you install on the motherboard.
1st Information: 7-7-7-20-4-60-8-5-20
The values vary depending on your settings of the following sub-items:
DRAM CAS# Latency [Auto]
Configuration options: [Auto] [3 DRAM Clock] [4 DRAM Clock] – [10 DRAM Clock]
[11 DRAM Clock]
3.5.5 Xtreme Phase Full Power Mode [Auto]
[Auto] Automatic configuration.
[Enabled] Enables Full Power Mode to ensure the best CPU overclocking performance.
The following two items appear only when you set the Ai Overclock Tuner item to
[Manual], [D.O.C.P.] or [X.M.P.].
3.5.6 BCLK Frequency [XXX]
Allows you to adjust the Internal Base Clock (BCLK). Use the <+> and <-> keys to adjust the
value. You can also key in the desired value using the numeric keypad. The values range
from 80 to 500.
3.5.7 PCIE Frequency [XXX]
Allows you to set the PCI Express frequency. Use the <+> and <-> keys to adjust the PCIE
frequency. You can also key in the desired value using the numeric keypad. The values range
from 100 to 200.