Optimization BIOS (2005 and Newer)

BIOS stands for Basic Input Output System. It's a small program closely related to the primary computer hardwares, i.e. keyboard, video adapter, memory, hard disk, etc. We can (re-)configure our computer for best possible setting with this utility. To enter into this utility, users usually have to press a key or key sequences during the boot or POST (Power On Self Test) process. Look at the on-screen message during this process or your PC (mainboard) manual.
Ok...after successfully entering BIOS setup utility, we can start to adjust the settings. Here are the tips:

Options should be Disabled:

• CPU Spread Spectrum (for the chance of CPU overclocking)
• Disable Unused PCI Clock (for power saving and reducing electromagnetic interference)
• MCLK Spread Spectrum (for the chance of  memory bus overclocking)
• PCI Bus Parking (for improving CPU performance)
• PCIE Spread Spectrum (for the chance of  PCI-E interconnect overclocking)
• PSB Parking (for improving CPU performance) 
• Hard Disk Pre-Delay (for faster boot time)
• HDD Self Diagnostic (for better HDD performance)
• SATA Spread Spectrum (for more system stability)
• AGP Spread Spectrum (for the chance of AGP bus overclocking)
• HPET Support (unless you are using OS newer than Windows XP)

Options should be Enabled:

• Auto Detect DIMM/PCI Clk (for power saving and reducing electromagnetic interference)
• FSB Spread Spectrum (for the chance of FSB overclocking)
• PCI Timeout (for better PCI performance) 
• V-Link 8X Support (for maximum bandwidth)
• V-Link Data 2X Support (disable only if you experience data corruption or boot problems) 
• IDE DMA Transfer Access (for better IDE drives performance)
• IDE Prefetch Mode (for higher throughput of IDE drives)
• Bank Swizzle Mode (for higher memory throughput unless you have system instability)
• Digital Locked Loop (DLL)
• Dynamic Counter (for better memory performance)
• AGP 3.0 Calibration Cycle
• AGP Performance Control (for better AGP performance)
• CPU Direct Access FB

Other Value:

• PCI-E Compliance Mode (set according to the PCI-E device)
• Host Burn-in Mode (highest possible value for overclocking CPU and memory bus)
• Maximum Read Request Size (set to auto)
• PCI Express Burn-in Mode (highest possible value for overclocking PCI Express bus)
• PCI Burn-in Mode (try the highest value but still lower than 37.5MHz)
• PCI Express Clock (try the value not higher than 110MHz)
• PCI Master Bus Timeout (set to smallest possible value but not 0)
• PCI Master Bus TimeOut Control (set to smallest possible value but not 0)
•  Burn-In Mode (highest possible value for overclocking CPU and memory bus)
• PCI-E Max Read Request Size (set to auto)
• PCI-E Maximum Payload Size (set to 4096 for maximum efficiency)
• PCI-E Reference Clock (try the value not higher than 110MHz)
• SM I/O Buffers Control (set to normal)
• Suppress Unused PCI Slot Clocks (set to yes for power saving and reducing electromagnetic interference)
• V-Link Data Rate (set to 8x for maximum bandwidth)
• V-Link Mode Selection (set to auto)
• ARMD (ATAPI Removable Media Device) Emulation Type (set to auto)
• ATA(PI) 80-Pin Cable Detection (set to Host and Device to prevent data corruption)
• DRDY Timing (set to Default to prevent data corruption)
• IDE Detect Time Out (set to 0 if possible for faster boot time)
• DCQ Bypass Maximum (set to auto)