Asus P5E3 Premium/WiFi-AP@n - Manual (Page 89)

ASUS P5E3 Premium/WiFi-AP @n 4-17
The configuration options for the following sub-item vary depending on the
DIMMs you install on the motherboard.
eXtreme Memory Profile [Disabled]
This item appears only when you set the Ai Overclock Tuner item to
[X.M.P.]. Allows you to select the X.M.P. mode supported by your Memory
module.
Configuration options: [Disabled] [Profile #1] [Profile #2]
To obtain the best performance of the X.M.P. 1800/1600 DIMM, install only
one DIMM on each memory channel. Refer to the table below for X.M.P. DIMM
installation recommendation.
4.4.2 CPU Ratio Control [Auto]
Configuration options: [Auto] [Manual].
CPU Ratio Setting [9]
This sub-item appears only when you set the CPU Ratio Control item to
[Manual]. Allows you to set the ratio between CPU Core Clock and FSB
Frequency. Use the <+> and <-> keys to adjust the ratio. If an invalid ratio is
set in CMOS, then actual and setpoint values may differ.
4.4.3 FSB Strap to North Bridge [Auto]
When set to [Auto], the FSB Strap will be adjusted automatically by FSB
Frequency and DRAM Frequency.
Congifuration options: [Auto] [200MHz] [266MHz] [333MHz] [400MHz]
X.M.P. DIMM Installation Recommendation
X.M.P. DIMM Frequency 1800 MHz 1800 MHz 1600 MHz 1600 MHz
Sockets
DIMM_A1 - √ - √
DIMM_B1 - √ - √
DIMM_A2 √ - √ -
DIMM_B2 √ - √ -
The following two items (FSB Frequency and PCIE Freuency) on the next
page appear only when you set the Ai Overclock Tuner item to [Manual].