Asus M3N78-EH - Manual (Page 66)

2-22 Chapter 2: BIOS setup
CPU Frequency, MHz [200]
Allows you to enter an integer value to over clock for CPU.
Configuration options: [Min.=200] [Max.=300]
MCP PCI-Express Frequency, MHz [100]
Allows you to enter an integer value to over clock for PCIE.
Configuration options: [Min.=100] [Max.=150]
Memory Voltage [Auto]
Allows you to select the Memory Voltage mode. Configuration options: [Auto]
[1.90V] [2.00V] [2.10V] [2.20V]
The following item appears only when the AI Overclocking item is set to
[Overclock Profile].
Overclock Options [Auto]
Allows you to select the overclock options. Configuration options: [Auto]
[Overclock 3%] [Overclock 5%] [Overclock 7%]
The following three items appear only when the AI Overclocking item is set to
[Manual].