Asus P7P55D PREMIUM - Xtreme Phase Full Power Mode; DRAM Frequency; QPI Frequency; DRAM Timing Control

3-14 Chapter 3: BIOS setup
Chapter 3
3.5.5 Xtreme Phase Full Power Mode [Auto]
[Auto] Automatic conguration.
[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.].
BCLK Frequency [XXX]
Allows you to adjust the Internal Base Clock (BCLK). Use the <+> and <-> keys to adjust the
value. You can also type the desired value using the numeric keypad. The values range from
80 to 500.
PCIE Frequency [XXX]
Allows you to set the PCI Express frequency. Use the <+> and <-> keys to adjust the PCIE
frequency. The values range from 100 to 200.
3.5.6 DRAM Frequency [Auto]
Allows you to set the DDR3 operating frequency.
Conguration options: [Auto] [DDR3-800MHz] [DDR3-1066MHz] [DDR3-1333MHz] [DDR3-
1600*]
• The DRAM Frequency conguration options vary with the BCLK Frequency item
settings.
• 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. Prole feature in BIOS. Refer to section
3.5.3 Ai Overclock Tuner for details.
Selecting a very high DRAM frequency may cause the system to become unstable! If this
happens, revert to the default setting.
3.5.7 QPI Frequency [Auto]
Allows you to set the QuickPath Interconnect (QPI) frequency.
Conguration options: [Auto] [4270MHz] [4800MHz]
3.5.8. DRAM Timing Control [Auto]
The items in this menu allow you to set the DRAM timing control features.
The conguration options for some of the following items vary depending on the DIMMsdepending on the DIMMs
you install on the motherboard.
1st Information: 6-6-6-15-4-36-6-5-16
The values vary depending on your settings of the following sub-items:
DRAM CAS# Latency [Auto]
Conguration options: [Auto] [3 DRAM Clock] [4 DRAM Clock] – [10 DRAM Clock] [11
DRAM Clock]