Complete Handbook to BIOS and CMOS Optimization 2

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Here are Our Favorite Settings for AMD CPU / Abit KT7-Raid

AGP Aperture size: Set this to half of your system memory.

AGP 4x mode: Set this to Enabled if your graphics card supports this mode.

AGP Master 1 WS Read: Enabled, this changes the default from a 2ws to a 1ws which will increase AGP Reading.

AGP Master 1 WS Write: Enabled, this changes the default from a 2ws to a 1ws which will increase AGP Writing.

Bank Dram Timing: Set this to Turbo for best performance. This may cause some instabilities if you do not have quality ram.

CPU to PCI Write Buffer: Set this to Enabled to improve PCI performance.

CPU L2 Cache ECC Checking: Set this to Enabled. This checks your L2 Cache for errors and attempts to fix them.

CPU L1 Cache: Definitely set this to Enabled.

CPU L2 Cache: Set this to Enabled also.

Fast Gate A20: Set this to Enabled. This is a faster than normal method to access memory over 1mb.

Fast Writes: Set this to Enabled. This will increase performance on graphics cards that support this.

IDE HDD Block mode: Set this to Enabled for best performance.

PCI Concurrency: This allows more than one PCI device to be active at one time. Set this to Enabled to improve performance.

PCI Master 0 WS Write: Set this to Enabled.

PCI/VGA Palette Snoop: Set this to Disabled.

Read Around Write: Set this to Enabled. This is a DRAM optimization feature.

SDRAM Pre-charge Control: This should be set to Enabled.

SDRAM Bank Interleave: Set this to 4-Bank for better memory performance.

SDRAM CAS Latency: Set this to 2 for better memory performance. This may cause instability if you only have CAS3 RAM.

Spread Spectrum: Set this to Disabled.

System Bios Cacheable: Set this to Disabled. This is not used much after boot up.

Turbo Frequency: This is only used for 66MHz & 100MHz FSB systems. This will increase FSB causing a "safe" overclock.

Video Bios Cacheable: Set this to Disabled. This is used for DOS

Video Bios Shadowing: Set this to Disabled. This is also used for DOS.

Video RAM Cacheable: Set this to Disabled.

CPU SETUP [Soft Menu III]:
* CPU Operating Speed: [User Define]
* CPU FSB/PCI Clock: 100/33MHz
* Multiplier Factor: ? - What you set this to depends on the speed of your CPU. AMD K7 CPU's are clock locked so this can't be an arbitrary value unless you have unlocked your CPU. For a quick tutorial on multiplier clocks, go to http://www.savagezone.net/articles/overclock/overclock.htm
* CPU FSB Plus (MHz): 0 - This setting allows you to overclock your FSB without affecting the AGP and PCI bus speed.
* I/O Voltage: 3.3V - Try raising this to 3.4V or 3.5V if you have instability problems at 3.3V.
* Fast CPU Command Decode: Normal - Fast is the optimal setting but only try using Fast when your computer is known to be stable.
* CPU Pull Up Strength: 3
* CPU Drive Strength: 2
* DRAM Clock: Hclk + PCIclk - This setting will run your memory %33 faster than the FSB speed you set with the "CPU FSB/PCI Clock" setting above. In this case it would result in your memory running at 133MHz (100 * 1.33 = 133MHz)
* Spread Spectrum Modulated: Disabled-Try "Enabled" if your computer experiences instability problems.

ADVANCED BIOS FEATURES:
*Video BIOS Shadow: Disabled - This used to increase performance, however today's video cards rarely access the BIOS and the ROM on today's BIOS's are much faster than they used to be. Enabling this setting can also cause instability.
*XX000-XXFFF: Disabled - Only enable if you have a component that suggests enabling it AND after your computer is known to be stable.

ADVANCED CHIPSET FEATURES:
* Bank x/x DRAM Timing: Normal - Only attempt Medium, Fast, and Turbo after you are sure the computer is stable at Normal.
* SDRAM Cycle Length: 2T
* Memory Hole: Certain ISA expansion cards require this setting to be enabled. The expansion cards manual will tell you if you need to enable this.
* Fast R-W Turnaround: Disabled - Don't enable this setting until you know that your computer is completely stable. Enabled is the optimal setting.

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