BIOS Option Of The Week

Adrian Wong · Jan 4, 2015

BIOS Option Of The Week - AT Bus Clock

Since 1999, we have been developing the BIOS Optimization Guide, affectionately known as the BOG. From a meagre beginning of a single page, it now covers over 440 BIOS options. As old BOG readers will know, we started offering two editions of the BOG since Revision 8.0 - a simplified edition and the complete edition.

Normally, the complete edition is only available to subscribers who help sponsor the development of the guide through a small fee. However, that changes today! From now on, we will post a BIOS option from the complete edition of the BIOS Optimization Guide every weekend.

This week, we will be taking a look at the AT Bus Clock BIOS setting. Here's an excerpt :

The AT bus is nothing more than another name for the ISA bus. The ISA bus was originally an 8-bit bus running at just 4.77 MHz. It was then expanded to include a 16-bit bus running initially at 6 MHz and later at 8 MHz. Eventually, the ISA bus was standardized to run at a maximum speed of 8.33 MHz.

Because each ISA data transfer takes anywhere from two to eight clock cycles to complete, this yields a maximum bandwidth of only 4.77 MB/s for 8-bit cards and 8.33 MB/s for 16-bit cards.

This BIOS feature allows you to select the ISA bus' clock speed. The chipset actually generates...
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Link : BIOS Option Of The Week - AT Bus Clock

Adrian Wong · Jan 11, 2015

BIOS Option Of The Week - DVMT Mode Select

Since 1999, we have been developing the BIOS Optimization Guide, affectionately known as the BOG. From a meagre beginning of a single page, it now covers over 440 BIOS options. As old BOG readers will know, we started offering two editions of the BOG since Revision 8.0 - a simplified edition and the complete edition.

Normally, the complete edition is only available to subscribers who help sponsor the development of the guide through a small fee. However, that changes today! From now on, we will post a BIOS option from the complete edition of the BIOS Optimization Guide every weekend.

This week, we will be taking a look at the DVMT Mode Select BIOS setting. Here's an excerpt :

Unified Memory Architecture (UMA) is a concept whereby system memory is shared by both CPU and graphics processor. While this reduces cost, it also reduces the system's performance by taking up a large portion of memory for the graphics processor.

Intel's Dynamic Video Memory Technology (DVMT) takes that concept further by allowing the system to dynamically allocate memory resources according to the demands of the system at any point in time. The key idea in DVMT is to improve the efficiency of the memory allocated to either system or graphics processor.

The BIOS feature that controls all this is the DVMT Mode Select BIOS feature. It allows you to...
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Link : BIOS Option Of The Week - DVMT Mode Select

Adrian Wong · Jan 18, 2015

BIOS Option Of The Week - Extended CPUID Function

Since 1999, we have been developing the BIOS Optimization Guide, affectionately known as the BOG. From a meagre beginning of a single page, it now covers over 440 BIOS options. As old BOG readers will know, we started offering two editions of the BOG since Revision 8.0 - a simplified edition and the complete edition.

Normally, the complete edition is only available to subscribers who help sponsor the development of the guide through a small fee. However, that changes today! From now on, we will post a BIOS option from the complete edition of the BIOS Optimization Guide every weekend.

This week, we will be taking a look at the Extended CPUID Function BIOS setting. Here's an excerpt :

When the computer is booted up, the operating system executes the CPUID instruction to identify the processor and its capabilities. Before it can do so, it must first query the processor to find out the highest input value CPUID recognizes. This determines the kind of basic information CPUID can provide the operating system.

To do so, the operating system must execute CPUID with the EAX register set to 0. Here's a table of the maximum CPUID input values the operating system will obtain from Intel processors when CPUID is executed...
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Link : BIOS Option Of The Week - Extended CPUID Function

Adrian Wong · Jan 25, 2015

BIOS Option Of The Week - Multi-Sector Transfers

Since 1999, we have been developing the BIOS Optimization Guide, affectionately known as the BOG. From a meagre beginning of a single page, it now covers over 440 BIOS options. As old BOG readers will know, we started offering two editions of the BOG since Revision 8.0 - a simplified edition and the complete edition.

Normally, the complete edition is only available to subscribers who help sponsor the development of the guide through a small fee. However, that changes today! From now on, we will post a BIOS option from the complete edition of the BIOS Optimization Guide every weekend.

This week, we will be taking a look at the Multi-Sector Transfers BIOS setting. Here's an excerpt :

This BIOS feature speeds up hard disk access by transferring multiple sectors of data per interrupt instead of using the usual single-sector transfer mode. This mode of transferring data is known as block transfers.

There are a few available options, from Disabled and a few different multiple sectors option to Maximum...
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Link : BIOS Option Of The Week - Multi-Sector Transfers

Adrian Wong · Feb 2, 2015

BIOS Option Of The Week - Master Priority Rotation

Since 1999, we have been developing the BIOS Optimization Guide, affectionately known as the BOG. From a meagre beginning of a single page, it now covers over 440 BIOS options. As old BOG readers will know, we started offering two editions of the BOG since Revision 8.0 - a simplified edition and the complete edition.

Normally, the complete edition is only available to subscribers who help sponsor the development of the guide through a small fee. However, that changes today! From now on, we will post a BIOS option from the complete edition of the BIOS Optimization Guide every weekend.

This week, we will be taking a look at the Master Priority Rotation BIOS setting. Here's an excerpt :

If you choose 1 PCI, the processor will always be granted access right after the current PCI bus master completes its transaction, irrespective of how many other PCI bus masters are on the queue. This improves processor-to-PCI performance, at the expense of other PCI transactions....
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Link : BIOS Option Of The Week - Master Priority Rotation

Adrian Wong · Feb 8, 2015

BIOS Option Of The Week - Max Async Latency

Since 1999, we have been developing the BIOS Optimization Guide, affectionately known as the BOG. From a meagre beginning of a single page, it now covers over 440 BIOS options. As old BOG readers will know, we started offering two editions of the BOG since Revision 8.0 - a simplified edition and the complete edition.

Normally, the complete edition is only available to subscribers who help sponsor the development of the guide through a small fee. However, that changes today! From now on, we will post a BIOS option from the complete edition of the BIOS Optimization Guide every weekend.

This week, we will be taking a look at the Max Async Latency BIOS setting. Here's an excerpt :

It controls the amount of asynchronous latency, which depends on the time it takes for data to travel from the processor to the furthest DIMM on the motherboard and back.

The asynchronous latency is designed to account for variances in the trace length to the furthest DIMM on the motherboard, as well as the type of DIMM, number of chips in that DIMM and the memory bus frequency...
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Link : BIOS Option Of The Week - Max Async Latency

Adrian Wong · Feb 15, 2015

BIOS Option Of The Week - V-Link Data 2X Support

Since 1999, we have been developing the BIOS Optimization Guide, affectionately known as the BOG. From a meagre beginning of a single page, it now covers over 440 BIOS options. As old BOG readers will know, we started offering two editions of the BOG since Revision 8.0 - a simplified edition and the complete edition.

Normally, the complete edition is only available to subscribers who help sponsor the development of the guide through a small fee. However, that changes today! From now on, we will post a BIOS option from the complete edition of the BIOS Optimization Guide every weekend.

This week, we will be taking a look at the V-Link Data 2X Support BIOS setting. Here's an excerpt :

This V-Link bus offers twice as much bandwidth as the PCI bus, allowing data transfers of up to 266MB/s. In addition, the IDE/SATA controller does not need share this bandwidth with any other device, as it would have to, if it was on the PCI bus. However, all is not peachy with the use of the faster V-Link bus.

There have been reports of hard drive data corruption as well as boot failures with some hard drives. This issue only affects hard drives connected to the VIA DriveStation. It does not affect hard drives connected to...
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Link : BIOS Option Of The Week - V-Link Data 2X Support

Adrian Wong · Feb 22, 2015

BIOS Option Of The Week - Intel Turbo Mode Tech

Since 1999, we have been developing the BIOS Optimization Guide, affectionately known as the BOG. From a meagre beginning of a single page, it now covers over 440 BIOS options. As old BOG readers will know, we started offering two editions of the BOG since Revision 8.0 - a simplified edition and the complete edition.

Normally, the complete edition is only available to subscribers who help sponsor the development of the guide through a small fee. However, that changes today! From now on, we will post a BIOS option from the complete edition of the BIOS Optimization Guide every weekend.

This week, we will be taking a look at the Intel Turbo Mode Tech BIOS setting. Here's an excerpt :

When this feature is enabled, the Intel Core i7 processor can dynamically overclock one or two of its four processing cores to improve performance with applications that are not multi-threaded or optimized for quad-core processors (e.g.single-threaded applications).

When there are only two active threads, the Intel Core i7 will automatically ramp up two of its processing cores by...
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Link : BIOS Option Of The Week - Intel Turbo Mode Tech

Adrian Wong · Mar 2, 2015

BIOS Option Of The Week - Hyper-Threading Technology

Since 1999, we have been developing the BIOS Optimization Guide, affectionately known as the BOG. From a meagre beginning of a single page, it now covers over 440 BIOS options. As old BOG readers will know, we started offering two editions of the BOG since Revision 8.0 - a simplified edition and the complete edition.

Normally, the complete edition is only available to subscribers who help sponsor the development of the guide through a small fee. However, that changes today! From now on, we will post a BIOS option from the complete edition of the BIOS Optimization Guide every weekend.

This week, we will be taking a look at the Hyper-Threading Technology BIOS setting. Here's an excerpt :

The Intel Hyper-Threading Technology is an extension to the IA-32 architecture which allows a single processor to execute two or more separate threads concurrently. When hyper-threading is enabled, multi-threaded software applications can execute their threads in parallel, thereby improving the processor's performance.

The current implementation involves two logical processors sharing the processor's execution engine and its bus interface. Each logical processor, though, will come with its own APIC. The other features of the processor are either...
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Link : BIOS Option Of The Week - Hyper-Threading Technology

Adrian Wong · Mar 8, 2015

BIOS Option Of The Week - NX BIOS Control

Since 1999, we have been developing the BIOS Optimization Guide, affectionately known as the BOG. From a meagre beginning of a single page, it now covers over 440 BIOS options. As old BOG readers will know, we started offering two editions of the BOG since Revision 8.0 - a simplified edition and the complete edition.

Normally, the complete edition is only available to subscribers who help sponsor the development of the guide through a small fee. However, that changes today! From now on, we will post a BIOS option from the complete edition of the BIOS Optimization Guide every weekend.

This week, we will be taking a look at the NX BIOS Control BIOS setting. Here's an excerpt :

Buffer overflow attacks are a major threat to networked computers. For example, a worm may infect a computer and flood the processor with code, bringing the system down to a halt. The worm will also propagate throughout the network, paralyzing each and every system it infects.

Due to the prevalence of such attacks, AMD added a feature called No Execute page protection, also known as Enhanced Virus Protection (EVP) to the AMD64 processors. This feature is designed to protect the computer against certain buffer overflow attacks...
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Link : BIOS Option Of The Week - NX BIOS Control

Adrian Wong · Mar 16, 2015

BIOS Option Of The Week - PAVP Mode

Since 1999, we have been developing the BIOS Optimization Guide, affectionately known as the BOG. From a meagre beginning of a single page, it now covers over 440 BIOS options. As old BOG readers will know, we started offering two editions of the BOG since Revision 8.0 - a simplified edition and the complete edition.

Normally, the complete edition is only available to subscribers who help sponsor the development of the guide through a small fee. However, that changes today! From now on, we will post a BIOS option from the complete edition of the BIOS Optimization Guide every weekend.

This week, we will be taking a look at the PAVP Mode BIOS setting. Here's an excerpt :

PAVP (Protected Audio Video Path) is a feature available on some Intel chipsets with integrated graphics. It ensures a secure content protection path for high-definition video sources like Blu-ray discs. It also enables hardware accelerated decoding of the encrypted video stream by the integrated graphics core.

Intel offers two PAVP modes - Paranoid and Lite. Here is a table that summarizes the difference between the two modes...
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Link : BIOS Option Of The Week - PAVP Mode

Adrian Wong · Mar 23, 2015

BIOS Option Of The Week - PIO Mode

Since 1999, we have been developing the BIOS Optimization Guide, affectionately known as the BOG. From a meagre beginning of a single page, it now covers over 440 BIOS options. As old BOG readers will know, we started offering two editions of the BOG since Revision 8.0 - a simplified edition and the complete edition.

Normally, the complete edition is only available to subscribers who help sponsor the development of the guide through a small fee. However, that changes today! From now on, we will post a BIOS option from the complete edition of the BIOS Optimization Guide every weekend.

This week, we will be taking a look at the PIO Mode BIOS setting. Here's an excerpt :

This BIOS feature allows you to set the PIO (Programmed Input/Output) mode for the IDE drive. Here is a table of the different PIO transfer rates and their corresponding maximum throughputs.

Normally, you should leave it as Auto and let the BIOS auto-detect the IDE drive's PIO mode. You should only set it manually for the following reasons...
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Link : BIOS Option Of The Week - PIO Mode

Adrian Wong · Mar 29, 2015

BIOS Option Of The Week - PPM Mode

Since 1999, we have been developing the BIOS Optimization Guide, affectionately known as the BOG. From a meagre beginning of a single page, it now covers over 440 BIOS options. As old BOG readers will know, we started offering two editions of the BOG since Revision 8.0 - a simplified edition and the complete edition.

Normally, the complete edition is only available to subscribers who help sponsor the development of the guide through a small fee. However, that changes today! From now on, we will post a BIOS option from the complete edition of the BIOS Optimization Guide every weekend.

This week, we will be taking a look at the PPM Mode BIOS setting. Here's an excerpt :

Support for ACPI 2.0 processor performance states was first introduced in the Microsoft Windows XP operating system. It finally allowed the operating system to directly control the processor's power and performance through the Advanced Configuration and Power Interface (ACPI).

Support for multi-processor systems and multi-core processors was eventually added to the ACPI 3.0 specifications. This is where the PPM Mode BIOS option comes in. It allows you to change the operating mode of the Processor Power Management (PPM)...
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Link : BIOS Option Of The Week - PPM Mode

Adrian Wong · Apr 5, 2015

BIOS Option Of The Week - PCI Target Latency

Since 1999, we have been developing the BIOS Optimization Guide, affectionately known as the BOG. From a meagre beginning of a single page, it now covers over 440 BIOS options. As old BOG readers will know, we started offering two editions of the BOG since Revision 8.0 - a simplified edition and the complete edition.

Normally, the complete edition is only available to subscribers who help sponsor the development of the guide through a small fee. However, that changes today! From now on, we will post a BIOS option from the complete edition of the BIOS Optimization Guide every weekend.

This week, we will be taking a look at the PCI Target Latency BIOS setting. Here's an excerpt :

This BIOS feature determines if the system controller should conform to the PCI maximum target latency rule.

According to the PCI maximum target latency rule, the PCI device must service a read request within 16 PCI clock cycles (32 PCI clock cycles if it is a host bus bridge) for the initial read and 8 PCI clock cycles for each subsequent read. Please note that this only applies to...
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Link : BIOS Option Of The Week - PCI Target Latency

Adrian Wong · Apr 13, 2015

BIOS Option Of The Week - MPS Revision

Since 1999, we have been developing the BIOS Optimization Guide, affectionately known as the BOG. From a meagre beginning of a single page, it now covers over 440 BIOS options. As old BOG readers will know, we started offering two editions of the BOG since Revision 8.0 - a simplified edition and the complete edition.

Normally, the complete edition is only available to subscribers who help sponsor the development of the guide through a small fee. However, that changes today! From now on, we will post a BIOS option from the complete edition of the BIOS Optimization Guide every weekend.

This week, we will be taking a look at the MPS Revision BIOS setting. Here's an excerpt :

This feature is only applicable to multiprocessor motherboards as it specifies the version of the Multi-Processor Specification (MPS) that the motherboard will use. The MPS is a specification by which PC manufacturers design and build Intel architecture systems with two or more processors.

MPS 1.1 was the original specification. MPS version 1.4 adds extended configuration tables for improved support of multiple PCI bus configurations and greater expandability in the future. In addition, MPS 1.4 introduces...
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Link : BIOS Option Of The Week - MPS Revision

Adrian Wong · Apr 19, 2015

BIOS Option Of The Week - MCLK Spread Spectrum

Since 1999, we have been developing the BIOS Optimization Guide, affectionately known as the BOG. From a meagre beginning of a single page, it now covers over 440 BIOS options. As old BOG readers will know, we started offering two editions of the BOG since Revision 8.0 - a simplified edition and the complete edition.

Normally, the complete edition is only available to subscribers who help sponsor the development of the guide through a small fee. However, that changes today! From now on, we will post a BIOS option from the complete edition of the BIOS Optimization Guide every weekend.

This week, we will be taking a look at the MCLK Spread Spectrum BIOS setting. Here's an excerpt :

Spread spectrum clocking works by continuously modulating the clock signal around a particular frequency. This "spreads out" the power output and "flattens" the spikes of signal waveform, keeping them below the FCC limit.

This BIOS feature controls spread spectrum clocking of the memory bus. It usually offers three levels of modulation - 0.25%, 0.5% or 0.75%. They denote the amount of modulation around the memory bus frequency. The greater the modulation, the greater the reduction of...
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Link : BIOS Option Of The Week - MCLK Spread Spectrum

Adrian Wong · Apr 26, 2015

BIOS Option Of The Week - Compatible FPU OPCODE

Since 1999, we have been developing the BIOS Optimization Guide, affectionately known as the BOG. From a meagre beginning of a single page, it now covers over 440 BIOS options. As old BOG readers will know, we started offering two editions of the BOG since Revision 8.0 - a simplified edition and the complete edition.

Normally, the complete edition is only available to subscribers who help sponsor the development of the guide through a small fee. However, that changes today! From now on, we will post a BIOS option from the complete edition of the BIOS Optimization Guide every weekend.

This week, we will be taking a look at the Compatible FPU OPCODE BIOS setting. Here's an excerpt :

In Intel IA-32 (P6 family, Pentium 4, etc...) processors, the x87 FPU stores the opcode of the last executed non-control instruction (also known as the fopcode or FOP code) in an 11-bit register. This provides state information for exception handlers.

However, to improve FPU performance, the Pentium 4 and Xeon processors will only store the FOP of the last non-transparent floating point instruction that had an unmasked exception. For backward compatibility, the Pentium 4 and Xeon processors allow programmable control of the FOP register. This is where the Compatible FPU OPCODE BIOS feature comes in...
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Link : BIOS Option Of The Week - Compatible FPU OPCODE

Adrian Wong · May 3, 2015

BIOS Option Of The Week - CPU/DRAM CLK Synch CTL

Since 1999, we have been developing the BIOS Optimization Guide, affectionately known as the BOG. From a meagre beginning of a single page, it now covers over 440 BIOS options. As old BOG readers will know, we started offering two editions of the BOG since Revision 8.0 - a simplified edition and the complete edition.

Normally, the complete edition is only available to subscribers who help sponsor the development of the guide through a small fee. However, that changes today! From now on, we will post a BIOS option from the complete edition of the BIOS Optimization Guide every weekend.

This week, we will be taking a look at the CPU/DRAM CLK Synch CTL BIOS setting. Here's an excerpt :

Normally, the synchronicity of the memory controller is determined by the memory clock. If the memory clock is the same as the front side bus speed, then the memory controller is in the synchronous mode. Otherwise, it is in the asynchronous mode.

This BIOS feature, however, allows a more clear-cut way of controlling the memory controller's operating mode...
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Link : BIOS Option Of The Week - CPU/DRAM CLK Synch CTL

Adrian Wong · May 10, 2015

BIOS Option Of The Week - TM2 Bus Ratio

Since 1999, we have been developing the BIOS Optimization Guide, affectionately known as the BOG. From a meagre beginning of a single page, it now covers over 440 BIOS options. As old BOG readers will know, we started offering two editions of the BOG since Revision 8.0 - a simplified edition and the complete edition.

Normally, the complete edition is only available to subscribers who help sponsor the development of the guide through a small fee. However, that changes today! From now on, we will post a BIOS option from the complete edition of the BIOS Optimization Guide every weekend.

This week, we will be taking a look at the TM2 Bus Ratio BIOS setting. Here's an excerpt :

This BIOS option is only available if you select Thermal Monitor 2 using the Thermal Management BIOS feature. It determines the CPU bus ratio that will be used when the CPU's Thermal Monitor 2 determines that the CPU is overheating and attempts to reduce the thermal output by throttling the CPU clock speed.

Although the BIOS allows you to select bus ratios of 0 to 255, this is actually limited by...
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Link : BIOS Option Of The Week - TM2 Bus Ratio

Adrian Wong · May 17, 2015

BIOS Option Of The Week - Super Bypass Mode

Since 1999, we have been developing the BIOS Optimization Guide, affectionately known as the BOG. From a meagre beginning of a single page, it now covers over 440 BIOS options. As old BOG readers will know, we started offering two editions of the BOG since Revision 8.0 - a simplified edition and the complete edition.

Normally, the complete edition is only available to subscribers who help sponsor the development of the guide through a small fee. However, that changes today! From now on, we will post a BIOS option from the complete edition of the BIOS Optimization Guide every weekend.

This week, we will be taking a look at the Super Bypass Mode BIOS setting. Here's an excerpt :

This BIOS feature basically allows the memory request organizer (MRO) of the memory controller to skip certain pipeline stages while transferring data to and from the memory subsystem.

This improves memory performance by allowing lower latency accesses to the memory subsystem. However, this feature can only be safely enabled if the following conditions are true...
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Link : BIOS Option Of The Week - Super Bypass Mode

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BIOS Option Of The Week

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BIOS Option Of The Week

Adrian Wong Da Boss Staff Member

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Adrian Wong Da Boss Staff Member

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Adrian Wong Da Boss Staff Member

Adrian Wong Da Boss Staff Member

Adrian Wong Da Boss Staff Member

Adrian Wong Da Boss Staff Member

Adrian Wong Da Boss Staff Member

Adrian Wong Da Boss Staff Member

Adrian Wong Da Boss Staff Member

Adrian Wong Da Boss Staff Member

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Adrian Wong Da Boss Staff Member

Adrian Wong Da Boss Staff Member

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