Manual
Table Of Contents
- P7P55D-E Premium specifications summary
- About this guide
- Safety information
- Notices
- Chapter 1: Product introduction
- Chapter 2: Hardware information
- Chapter 3: BIOS setup
- 3.1 Knowing BIOS
- 3.2 Updating BIOS
- 3.3 BIOS setup program
- 3.4 Main menu
- 3.5 Ai Tweaker menu
- 3.5.1 Ai Overclock Tuner [Auto]
- 3.5.2 CPU Ratio Setting [Auto]
- 3.5.3 Intel(R) SpeedStep(TM) Tech [Enabled]
- 3.5.4 Intel(R) TurboMode Tech [Enabled]
- 3.5.5 Xtreme Phase Full Power Mode [Auto]
- 3.5.6 DRAM Frequency [Auto]
- 3.5.7 QPI Frequency [Auto]
- 3.5.8. DRAM Timing Control [Auto]
- 3.5.9 CPU Differential Amplitude [Auto]
- 3.5.10 CPU Clock Skew [Auto]
- 3.5.11 CPU Voltage Mode [Offset]
- 3.5.12 IMC Voltage [Auto]
- 3.5.13 DRAM Voltage [Auto]
- 3.5.14 CPU PLL Voltage [Auto]
- 3.5.15 PCH Voltage [Auto]
- 3.5.16 DRAM DATA REF Voltage on CHA/B [Auto]
- 3.5.17 DRAM CTRL REF Voltage on CHA/B [Auto]
- 3.5.18 Load-Line Calibration [Auto]
- 3.5.19 CPU Spread Spectrum [Auto]
- 3.5.20 PCIE Spread Spectrum [Auto]
- 3.6 Advanced menu
- 3.7 Power menu
- 3.8 Boot menu
- 3.9 Tools menu
- 3.10 Exit menu
- Chapter 4: Software support
- Chapter 5: Multiple GPU technology support

ASUS P7P55D-E Premium 2-23
Chapter 2
VGA conguration
PCI Express operating mode
PCIe x16_1 PCIe x16_2
Single VGA/PCIe card
x16
(Recommend for single VGA)
N/A
Dual VGA/PCIe card
x8 x8
• In single VGA card mode, use rst the PCIe 2.0 x16_1 slot (blue) for a PCI Express
x16 graphics card to get better performance.
• In CrossFireX™ or SLI™ mode, use the PCIe 2.0 x16_1 (blue) and PCIe 2.0 x16_2
(gray) slots for PCI Express x16 graphics cards to get better performance.
• We recommend that you provide sufcient power when running CrossFireX™ or SLI™
mode. Refer to page 2-39 for details.
• Connect a chassis fan to the motherboard connector labeled CHA_FAN1/2 when
using multiple graphics cards for better thermal environment. Refer to page 2-37 for
details.