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ASUS uses a modified version of the American Megatrends AMIBIOS on their motherboard. The main menu is split into Main, Ai Tweaker, Advanced, Power, Boot Tools and Exit submenus. The Main submenu has the Date, Time and Drive detection. Here you also set your Storage settings. The H55 chipset does not support RAID, but offers Enhanced which is like AHCI.
 Battery  GPU Boost
The Advanced Menu is where the CPU Configuration, Uncore Configuration, Onboard Devices Configuration, USB Configuration, and PCIPnP Configuration is done. CPU Configuration configures such settings as the CPU Ratio setting, the C1E support and the Virtualization Technology.Uncore configuration menu is where you change the advanced chipset settings including the Memory Remap feature, and the integrated graphics chip. The maximum total graphics memory available to the graphics chip is dependent on the installed system memory.
The Ai Tweaker menu is where the overclocking and tweaking of the system is done. The Ai Overclock Tuner has settings including Manual, Auto, DOCP which overclocks the DRAM frequency by adjusting the BCLK and XMP which sets the RAM frequency by the XMP profile assuming the memory supports it. You can also change the CPU Ratio down on the CPU, enable SpeedStep, and Intel TurboMode in the Ai Tweaker menu. There's a whole bunch of settings which I have compiled into a neat chart listed below:
| Setting | Range |
| CPU Ratio | Dependent on CPU |
| BCLK | 80-500MHz |
| PCIE Frequency | 100-200 |
| DRAM Frequency | Dependent on CPU |
| QPI Frequency | Up to 4.8GT/s |
| DRAM Timing control | |
| CAS# Latency | Auto, 3 DRAM Clocks, 4 DRAM Clock-10 DRAM Clock, 11 DRAM Clock |
| RAS# to CAS# | Auto, 3 DRAM Clocks, 4 DRAM Clock-14 DRAM Clock, 15 DRAM Clock |
| RAS# PRE Time | Auto, 3 DRAM Clocks, 4 DRAM Clock-14 DRAM Clock, 15 DRAM Clock |
| RAS# ACT | Auto, 3 DRAM Clocks, 4 DRAM Clock-30 DRAM Clock, 31 DRAM Clock |
| RAS# to RAS# | Auto, 1 DRAM Clock-7 DRAM Clock |
| DRAM Ref Cycle | Auto, 48 DRAM Clock, 60 DRAM Clock, 72 DRAM Clock, 82 DRAM Clock, 88 DRAM Clock, 90 DRAM Clock, 100 DRAM Clock, 110 DRAM Clock, 114 DRAM Clock, 118 DRAM Clock, 122 DRAM Clock, 126 DRAM Clock, 130 DRAM Clock, 134 DRAM Clock, 138 DRAM Clock, 142 DRAM Clock, 150 DRAM Clock, 160 DRAM Clock, 170 DRAM Clock, 180 DRAM Clock, 190 DRAM Clock, 200 DRAM Clock |
| Write Recovery Time | Auto 1-18 DRAM Clock |
| Read to PRE | Auto 3-15 DRAM Clock |
| FOUR ACT WIN | Auto, 1-63 DRAM Clock |
| DRAM Timing mode | Auto 1N, 2N |
| Write To Read delay (DR) | Auto 1 DRAM Clock-8 DRAM Clock |
| Write to read delay (SR) | Auto 10 DRAM Clock-22 DRAM Clock |
| Read to Write Delay (S/D) | Auto, 2 DRAM Clock-14 DRAM Clock |
| Read to Read delay (DR) | Auto, 4 DRAM Clock- 9 DRAM Clock |
| Write to Write Delay | Auto, 2 DRAM Clock-9 DRAM Clock |
| Read to Read delay (SR) | Auto, 2 DRAM Clock-06 DRAM Clock |
| Write to Write Delay | (SR)( Auto, 4 DRAM Clock, 6 DRAM Clock |
| CPU Differential amplitude | Auto, 700mV 800mV 900mV 1000mV |
| CPU Clock Skew | Auto, Normal, Delay 100ps-Delay 1500ps |
| Offset Voltage | 0.00625V-0.50000V |
| Fixed Voltage | 0.85V-1.7V |
| IMC Voltage | 1.7V-1.9V |
| DRAM Voltage | 1.2V-2.2V |
| CPU PLL Voltage | 1.8V-2.2V |
| PCH Voltage | 1.05V-2.0V |
| IGPU Voltage | 0.5V-1.75V |
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