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BIOS Option Of The Week - Max CPUID Value Limit
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BIOS Option Of The Week

Since 1999, we have been developing the BIOS Optimization Guide, affectionately known as the BOG. From a meager 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.

In the simplified edition, the description of each BIOS option in this guide is condensed and written in a simplified format. This simplified edition is not a sampler or demo version of the complete BIOS Optimization Guide. It is merely a simplified version with all the essential points and minus the frills.

The complete edition, on the other hand, features both simplified descriptions as well as full details of each BIOS option. This allows you to quickly get the gist of what each BIOS option mean and delve deeper into the details if you wish to learn more about it.

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. We hope this will help you improve your knowledge of BIOS options. If you find the guide useful, be sure to tell your friends!

This week, we will be taking a look at the Max CPUID Value Limit BIOS option.

 

Max CPUID Value Limit

Common Options : Enabled, Disabled

Quick Review

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.

The maximum CPUID input value determines the values that the operating system can write to the CPUID's EAX register to obtain information about the processor.

Intel processors from the Pentium Pro onwards have a maximum CPUID input value of only 02h or 03h. The only exception is the Intel Pentium 4 with Hyper-Threading Technology (HTT).

Older operating systems like Windows 95/98 and Windows Me were released before the Intel Pentium 4 with HTT and are therefore not aware of such a processor. They are not capable of handling the extra CPUID information provided by the processor with EAX input values greater than 03h.

This is where the Max CPUID Value Limit BIOS feature comes in. It allows you to circumvent problems with older operating systems that do not support the Intel Pentium 4 processor with Hyper-Threading Technology.

When enabled, the processor will limit the maximum CPUID input value to 03h when queried, even if the processor supports a higher CPUID input value.

When disabled, the processor will return the actual maximum CPUID input value of the processor when queried.

It is recommended that you leave it at the default setting of Disabled. You should only enable it if you intend to use the Intel Pentium 4 processor with Hyper-Threading Technology with an operating system that does not support it.

Please note that this BIOS feature only allows the Intel Pentium 4 processor with Hyper-Threading Technology to work with operating systems that do not support it. It does not enable the processor's advanced capabilities for such operating systems.

 

Details

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 with the EAX register set to 0.

IA-32 Processors

Maximum CPUID
Input Value

Earlier Intel486 Processors

CPUID Not Implemented

Later Intel486 Processors

01h

Pentium Processors

01h

Pentium Pro Processors

02h

Pentium II Processors

02h

Celeron Processors

02h

Pentium III Processors

03h

Pentium 4 Processors

02h

Xeon Processors

02h

Pentium M Processors

02h

Pentium 4 Processors
with Hyper-Threading Technology

05h

The maximum CPUID input value determines the values that the operating system can write to the CPUID's EAX register to obtain information about the processor.

Maximum CPUID
Input Value

EAX Input Values
Supported

01h

00h, 01h

02h

00h, 01h, 02h

03h

00h, 01h, 02h, 03h

05h

00h, 01h, 02h, 03h, 04h, 05h

Using those EAX input values, the operating system queries the processor for the following basic information.

EAX
Input Value

Possible Basic Information Provided by CPUID

00h

EAX : Maximum input value for basic CPUID information
EBX : "Genu"
ECX : "ntel"
EDX : ineI"

01h

EAX
-
32-bit Processor Signature
- last 32 bits of the 96-bit processor serial number

EBX
-
Brand Index
- CLFLUSH line size
- count of logical processors
- processor local APIC physical ID

ECX
- Processor feature flags

EDX
- Processor feature flags

02h

EAX : Cache and TLB descriptors
EBX : Cache and TLB descriptors
ECX : Cache and TLB descriptors
EDX : Cache and TLB descriptors

03h

EAX : Reserved
EBX : Reserved
ECX : First 32 bits of the 96-bit processor serial number
EDX : Second 32 bits of the 96-bit processor serial number

04h

EAX
- Cache type
- Cache level
- Self-initializing cache level
- Presence of fully associative cache
- Number of threads sharing this cache
- Number of processor cores on this die

EBX
- System coherency line size
- Physical line partitions
- Ways of associativity

ECX : Number of sets
EDX : Reserved

05h

EAX : MONITOR/MWAIT function
EBX : MONITOR/MWAIT function
ECX : Reserved
EDX : Reserved

Intel processors from the Pentium Pro onwards have a maximum CPUID input value of only 02h or 03h. The only exception is the Intel Pentium 4 with Hyper-Threading Technology (HTT).

Older operating systems like Windows 95/98 and Windows Me were released before the Intel Pentium 4 with HTT and are therefore not aware of such a processor. This may not be a problem if the Pentium 4 with HTT does not come with additional CPUID capabilities. But unfortunately for these operating systems, it comes with a maximum CPUID input value of 05h as well as support for additional EAX input values of 04h and 05h.

When these operating systems boot up, they will receive a maximum CPUID input value of 05h from the processor. But these operating systems are only designed to make use of basic CPUID information available to EAX input values of up to 03h. They are not capable of handling the extra CPUID information provided by the processor with EAX input values greater than 03h.

This is where the Max CPUID Value Limit BIOS feature comes in. It allows you to circumvent problems with older operating systems that do not support the Intel Pentium 4 processor with Hyper-Threading Technology.

When enabled, the processor will limit the maximum CPUID input value to 03h when queried, even if the processor supports a higher CPUID input value. The operating system will only query the processor with EAX input values of up to 03h.

When disabled, the processor will return the actual maximum CPUID input value of the processor when queried.

By default, it is set to Disabled because all new operating systems come with support for the Intel Pentium 4 processor with Hyper-Threading Technology, and have no problem handling the additional CPUID information.

Irrespective of what you set this BIOS feature to, the BIOS will first query the processor. Only if the processor returns a maximum CPUID input value greater than 03h, will this BIOS feature be taken into account. If the processor returns a maximum CPUID input value of 03h or less, this BIOS feature will be ignored.

It is recommended that you leave it at the default setting of Disabled. You should only enable it if you intend to use the Intel Pentium 4 processor with Hyper-Threading Technology with an operating system that does not support it.

Please note that this BIOS feature only allows the Intel Pentium 4 processor with Hyper-Threading Technology to work with operating systems that do not support it. It does not enable the processor's advanced capabilities for such operating systems.

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Date

Revision

Revision History

01-12-2008

1.0

Covered the Intel Turbo Mode Tech BIOS option.

07-12-2008

1.1

Covered the DRDY Timing BIOS option.

14-12-2008

1.2

Covered the ACPI 2.0 Support BIOS option.

21-12-2008

1.3

Covered the Overclock Recovery BIOS option.

28-12-2008

1.4

Covered the EXT-P2P's Discard Time BIOS option.

04-01-2009

1.5

Covered the Graphics Aperture Size BIOS option.

11-01-2009

1.6

Covered the Memory DQ Drive Strength BIOS option.

18-01-2009

1.7

Covered the PCI-E Maximum Payload Size BIOS option.

25-01-2009

1.8

Covered the Max Async Latency BIOS option.

01-02-2009

1.9

Covered the Chipkill BIOS option.

08-02-2009

2.0

Covered the PCI Delay Transaction BIOS option.

15-02-2009

2.1

Covered the MAC Media Interface BIOS option.

22-02-2009

2.2

Covered the Digital Locked Loop (DLL) BIOS option.

01-03-2009

2.3

Covered the PCI-E Max Read Request Size BIOS option.

08-03-2009

2.4

Covered the DBI Output for AGP Trans. BIOS option.

15-03-2009

2.5

Covered the V-Link Mode Selection BIOS option.

21-03-2009

2.6

Covered the Errata 94 Enhancement BIOS option.

28-03-2009

2.7

Covered the Errata 123 Enhancement BIOS option.

05-04-2009

2.8

Covered the Dynamic Idle Cycle Counter BIOS option.

11-04-2009

2.9

Covered the Gate A20 Option BIOS option.

20-04-2009

3.0

Covered the Split Lock Operations BIOS option.

26-04-2009

3.1

Covered the DOS Flat Mode BIOS option.

03-05-2009

3.2

Covered the FPU OPCODE Compatible Mode BIOS option.

10-05-2009

3.3

Covered the LD-Off Dram RD/WR Cycles BIOS option.

17-05-2009

3.4

Covered the Odd Divisor Correct BIOS option.

24-05-2009

3.5

Covered the No-Execute Memory Protect BIOS option.

31-05-2009

3.6

Covered the ISA Enable Bit BIOS option.

07-06-2009

3.7

Covered the Interrupt 19 Capture BIOS option.

14-06-2009

3.8

Covered the Internal Graphics Mode Select BIOS option.

28-06-2009

3.9

Covered the PCI 2.1 Compliance BIOS option.

05-07-2009

4.0

Covered the SATA AHCI Mode BIOS option.

12-07-2009

4.1

Covered the L1 Data Cache Context Mode BIOS option.

09-08-2009

4.2

Covered the Maximum Read Request Size BIOS option.

16-08-2009

4.3

Covered the Delay DRAM Read Latch BIOS option.

23-08-2009

4.4

Covered the No Mask of SBA FE BIOS option.

29-08-2009

4.5

Covered the CPU Fast String BIOS option.

06-09-2009

4.6

Covered the CPUID Maximum Value Limit BIOS option.

19-09-2009

4.7

Covered the CPU Hardware Prefetch BIOS option.

27-09-2009

4.8

Covered the CPU/DRAM CLK Synch CTL BIOS option.

04-10-2009

4.9

Covered the CPU Drive Strength BIOS option.

18-10-2009

5.0

Covered the CPU Direct Access FB BIOS option.

24-10-2009

5.1

Covered the CPU Adjacent Sector Prefetch BIOS option.

01-11-2009

5.2

Covered the Compatible FPU OPCODE BIOS option.

08-11-2009

5.3

Covered the Clock Throttle BIOS option.

15-11-2009

5.4

Covered the Byte Merge BIOS option.

21-11-2009

5.5

Covered the Burn-In Mode BIOS option.

29-11-2009

5.6

Covered the Boot To OS/2 BIOS option.

06-12-2009

5.7

Covered the Boot Up Floppy Seek BIOS option.

13-12-2009

5.8

Covered the Auto Turn Off PCI Clock Pin BIOS option.

20-12-2009

5.9

Covered the Athlon 4 SSED Instruction BIOS option.

27-12-2009

6.0

Covered the ATA(PI) 80-Pin Cable Detection BIOS option.

02-01-2010

6.1

Covered the AT Bus Clock BIOS option.

17-01-2010

6.2

Covered the Assign IRQ For VGA BIOS option.

24-01-2010

6.3

Covered the ASF Support BIOS option.

31-01-2010

6.4

Covered the APIC Function BIOS option.

07-02-2010

6.5

Covered the Anti-Virus Protection BIOS option.

14-02-2010

6.6

Covered the Anti-Dot Crawl BIOS option.

21-02-2010

6.7

Covered the AGPCLK / CPUCLK BIOS option.

07-03-2010

6.8

Covered the AGP to DRAM Prefetch BIOS option.

14-03-2010

6.9

Covered the AGP Secondary Lat Timer BIOS option.

21-03-2010

7.0

Covered the AGP Read Synchronization BIOS option.

11-04-2010

7.1

Covered the AGP Prefetch BIOS option.

01-05-2010

7.2

Covered the AGP Performance Control BIOS option.

09-05-2010

7.3

Covered the AGP/PCI Burn-in Mode BIOS option.

16-05-2010

7.4

Covered the AGP ISA Aliasing BIOS option.

23-05-2010

7.5

Covered the AGP Driving Value BIOS option.

30-05-2010

7.6

Covered the AGP Driving Control BIOS option.

06-06-2010

7.7

Covered the AGP Drive Strength BIOS option.

13-06-2010

7.8

Covered the AGP Always Compensate BIOS option.

21-06-2010

7.9

Covered the AGP 3.0 Calibration Cycle BIOS option.

27-06-2010

8.0

Covered the Adjacent Cache Line Prefetch BIOS option.

04-07-2010

8.1

Covered the ACPI SRAT Table BIOS option.

11-07-2010

8.2

Covered the Act Bank A to B CMD Delay BIOS option.

18-07-2010

8.3

Covered the ACPI APIC Function BIOS option.

25-07-2010

8.4

Covered the 2T Command BIOS option.

31-07-2010

8.5

Covered the XD Technology BIOS option.

08-08-2010

8.6

Covered the Write Recovery Time BIOS option.

15-08-2010

8.7

Covered the Write Data In to Read Delay BIOS option.

29-08-2010

8.8

Covered the Write CAS Latency (Twcl) BIOS option.

05-09-2010

8.9

Covered the Watchdog Timer BIOS option.

12-09-2010

9.0

Covered the Watch Dog Timer Select BIOS option.

26-09-2010

9.1

Covered the Video RAM Cacheable BIOS option.

10-10-2010

9.2

Covered the Video Memory Cache Mode BIOS option.

17-10-2010

9.3

Covered the Video BIOS Shadowing BIOS option.

24-10-2010

9.4

Covered the Video BIOS Cacheable BIOS option.

31-10-2010

9.5

Covered the VGA Share Memory Size BIOS option.

07-11-2010

9.6

Covered the USWC Write Posting BIOS option.

14-11-2010

9.7

Covered the USB Port 64/60 Emulation BIOS option.

20-11-2010

9.8

Covered the System BIOS Cacheable BIOS option.

05-12-2010

9.9

Covered the Synchronous Mode Select BIOS option.

12-12-2010

10.0

Covered the Suppress Unused PCI Slot Clocks BIOS option.

19-12-2010

10.1

Covered the SuperStability Mode BIOS option.

09-01-2011

10.2

Covered the SM I/O Buffers Control BIOS option.

15-01-2011

10.3

Covered the Share Memory Size BIOS option.

22-01-2011

10.4

Covered the Search for MDA Resources BIOS option.

30-01-2011

10.5

Covered the SDRAM Write to Read Command Delay BIOS option.

05-02-2011

10.6

Covered the SDRAM Write Recovery Time BIOS option.

13-02-2011

10.7

Covered the SDRAM Trrd Timing Value BIOS option.

20-02-2011

10.8

Covered the SDRAM Leadoff Command BIOS option.

26-02-2011

10.9

Covered the SDRAM RAS Pulse Width BIOS option.

06-03-2011

11.0

Covered the SDRAM RAS-to-CAS Delay BIOS option.

13-03-2011

11.1

Covered the SDRAM RAS Precharge Time BIOS option.

03-04-2011

11.2

Covered the SDRAM PH Limit BIOS option.

10-04-2011

11.3

Covered the SDRAM Page Closing Policy BIOS option.

17-04-2011

11.4

Covered the SDRAM Bank Interleave BIOS option.

24-04-2011

11.5

Covered the SDRAM Burst Length BIOS option.

01-05-2011

11.6

Covered the SDRAM RAS Precharge Delay BIOS option.

15-05-2011

11.7

Covered the SDRAM ECC Setting BIOS option.

22-05-2011

11.8

Covered the SDRAM Active to Precharge Delay BIOS option.

29-05-2011

11.9

Covered the SDRAM Bank-to-Bank Delay BIOS option.

05-06-2011

12.0

Covered the SDRAM Command Leadoff Time BIOS option.

11-06-2011

12.1

Covered the SDRAM Row Cycle Time BIOS option.

25-06-2011

12.2

Covered the SDRAM CAS Latency Time BIOS option.

03-07-2011

12.3

Covered the TM2 Bus VID BIOS option.

10-07-2011

12.4

Covered the Virtualization BIOS option.

17-07-2011

12.5

Covered the Vanderpool Technology BIOS option.

24-07-2011

12.6

Covered the V-Link 8X Support BIOS option.

31-07-2011

12.7

Covered the V-Link Mode Selection BIOS option.

07-08-2011

12.8

Covered the USB Mass Storage Reset Delay BIOS option.

14-08-2011

12.9

Covered the TV Standard BIOS option.

21-08-2011

13.0

Covered the SSE/SSE2 Instructions BIOS option.

28-08-2011

13.1

Covered the S2K Bus Driving Strength BIOS option.

11-09-2011

13.2

Covered the PCI Bus Parking BIOS option.

18-09-2011

13.3

Covered the PIRQ x Use IRQ No. BIOS option.

25-09-2011

13.4

Covered the On-Chip Frame Buffer Size BIOS option.

02-10-2011

13.5

Covered the Refresh Mode Select BIOS option.

09-10-2011

13.6

Covered the PEG/Onchip VGA Control BIOS option.

16-10-2011

13.7

Covered the PCI Clock Synchronization Mode BIOS option.

23-10-2011

13.8

Covered the MPS Control Version For OS BIOS option.

30-10-2011

13.9

Covered the Split Lock Operations BIOS option.

06-11-2011

14.0

Covered the Intel Dynamic Acceleration BIOS option.

12-11-2011

14.1

Covered the CPU On-Die Termination BIOS option.

27-11-2011

14.2

Covered the DBI Output for AGP Trans. BIOS option.

11-12-2011

14.3

Covered the Node Memory Interleave BIOS option.

18-12-2011

14.4

Covered the DRAM Ratio H/W Strap BIOS option.

25-12-2011

14.5

Covered the ARMD Emulation Type BIOS option.

01-01-2012

14.6

Covered the Interrupt 19 Capture BIOS option.

08-01-2012

14.7

Covered the Reserved Memory Size BIOS option.

15-01-2012

14.8

Covered the PCI Dynamic Bursting BIOS option.

29-01-2012

14.9

Covered the PSB Parking BIOS option.

05-02-2012

15.0

Covered the PCI Express Burn-in Mode BIOS option.

12-02-2012

15.1

Covered the PCI/VGA Palette Snoop BIOS option.

19-02-2012

15.2

Covered the Bypass Max BIOS option.

25-02-2012

15.3

Covered the DCLK Feedback Delay BIOS option.

04-03-2012

15.4

Covered the DVMT/FIXED Memory BIOS option.

11-03-2012

15.5

Covered the NX Technology BIOS option.

17-03-2012

15.6

Covered the Odd Divisor Correct BIOS option.

01-04-2012

15.7

Covered the FIXED Memory Size BIOS option.

08-04-2012

15.8

Covered the Delay DRAM Read Latch BIOS option.

15-04-2012

15.9

Covered the PCI Master Read Caching BIOS option.

22-04-2012

16.0

Covered the Bank Swizzle Mode BIOS option.

29-04-2012

16.1

Covered the Digital Locked Loop (DLL) BIOS option.

06-05-2012

16.2

Covered the Internal Graphics Mode Select BIOS option.

13-05-2012

16.3

Covered the CPU Direct Access FB BIOS option.

20-05-2012

16.4

Covered the DRDY Timing BIOS option.

27-05-2012

16.5

Covered the Asynclat BIOS option.

03-06-2012

16.6

Covered the DCQ Bypass Maximum BIOS option.

10-06-2012

16.7

Covered the CPU Hardware Prefetch BIOS option.

16-06-2012

16.8

Covered the CPU Thermal-Throttling BIOS option.

23-06-2012

16.9

Covered the CPU Differential Amplitude BIOS option.

30-06-2012

17.0

Covered the CPU Latency Timer BIOS option.

08-07-2012

17.1

Covered the CPU to PCI Post Write BIOS option.

15-07-2012

17.2

Covered the CPU to PCI Write Buffer BIOS option.

22-07-2012

17.3

Covered the CPU Adjacent Sector Prefetch BIOS option.

28-07-2012

17.4

Covered the Display Card Priority BIOS option.

04-08-2012

17.5

Covered the DVMT Mode BIOS option.

12-08-2012

17.6

Covered the NVIDIA GPU Ex BIOS option.

19-08-2012

17.7

Covered the PCI Master Bus TimeOut Control BIOS option.

26-08-2012

17.8

Covered the Graphic Win Size BIOS option.

02-09-2012

17.9

Covered the Graphic Window WR Combin BIOS option.

09-09-2012

18.0

Covered the Frame Buffer Size BIOS option.

16-09-2012

18.1

Covered the PEG Port VC1/Map BIOS option.

23-09-2012

18.2

Covered the No Mask of SBA FE BIOS option.

29-09-2012

18.3

Covered the L2 Streaming Prefetch BIOS option.

07-10-2012

18.4

Covered the DOS Flat Mode BIOS option.

13-10-2012

18.5

Covered the Byte Merge BIOS option.

21-10-2012

18.6

Covered the Chipkill BIOS option.

26-10-2012

18.7

Covered the K7 CLK_CTL Select BIOS option.

04-11-2012

18.8

Covered the FPU OPCODE Compatible Mode BIOS option.

11-11-2012

18.9

Covered the CPUID Maximum Value Limit BIOS option.

18-11-2012

19.0

Covered the ISA Enable Bit BIOS option.

25-11-2012

19.1

Covered the DQS Training Control BIOS option.

02-12-2012

19.2

Covered the DRAM Read Latch Delay BIOS option.

08-12-2012

19.3

Covered the DRAM Burst Length 8QW BIOS option.

16-12-2012

19.4

Covered the DRAM Ratio (CPU:DRAM) BIOS option.

23-12-2012

19.5

Covered the PreChrg to Act CMD BIOS option.

30-12-2012

19.6

Covered the DRAM Data Integrity Mode BIOS option.

06-01-2013

19.7

Covered the SDRAM Idle Limit BIOS option.

13-01-2013

19.8

Covered the DRAM Idle Timer BIOS option.

20-01-2013

19.9

Covered the SDRAM Row Active Time BIOS option.

03-02-2013

20.0

Covered the DRAM Act to PreChrg CMD BIOS option.

17-02-2013

20.1

Covered the SDRAM 1T Command BIOS option.

24-02-2013

20.2

Covered the SDRAM Cycle Length BIOS option.

03-03-2013

20.3

Covered the No-Execute Memory Protect BIOS option.

10-03-2013

20.4

Covered the Refressh Interval BIOS option.

17-03-2013

20.5

Covered the SDRAM Tras Timing Value BIOS option.

24-03-2013

20.6

Covered the SDRAM Trc Timing Value BIOS option.

31-03-2013

20.7

Covered the R/W Queue Bypass BIOS option.

07-04-2013

20.8

Covered the SDRAM Page Hit Limit BIOS option.

14-04-2013

20.9

Covered the OS Select For DRAM > 64MB BIOS option.

21-04-2013

21.0

Covered the SDRAM 1T Command Control BIOS option.

27-04-2013

21.1

Covered the DRAM Page-Mode BIOS option.

07-05-2013

21.2

Covered the Passive Release BIOS option.

12-05-2013

21.3

Covered the HPET Support BIOS option.

19-05-2013

21.4

Covered the ISA Shared Memory BIOS option.

25-05-2013

21.5

Covered the Hardware Prefetcher BIOS option.

02-06-2013

21.6

Covered the AGP Read Synchronization BIOS option.

09-06-2013

21.7

Covered the AGP Secondary Lat Timer BIOS option.

16-06-2013

21.8

Covered the PCI-E Compliance Mode BIOS option.

22-06-2013

21.9

Covered the PCI Pipelining BIOS option.

29-06-2013

22.0

Covered the PCI Latency Timer BIOS option.

06-07-2013

22.1

Covered the PCI 2.1 Compliance BIOS option.

13-07-2013

22.2

Covered the PCI Burn-in Mode BIOS option.

20-07-2013

22.3

Covered the PCI Delay Transaction BIOS option.

27-07-2013

22.4

Covered the PCI Master Bus Timeout BIOS option.

04-08-2013

22.5

Covered the PCI-E Max Read Request Size BIOS option.

11-08-2013

22.6

Covered the PCI Express Selector BIOS option.

18-08-2013

22.7

Covered the PCI IRQ Activated By BIOS option.

25-08-2013

22.8

Covered the PCI-E Reference Clock BIOS option.

01-09-2013

22.9

Covered the PCI IDE Busmaster BIOS option.

08-09-2013

23.0

Covered the PCI#2 Access #1 Retry BIOS option.

15-09-2013

23.1

Covered the Limit CPUID Max. to 3 BIOS option.

15-09-2013

23.2

Covered the Dithering BIOS option.

28-09-2013

23.3

Covered the LD-Off Dram RD/WR Cycles BIOS option.

06-10-2013

23.4

Covered the IGD DVMT Memory BIOS option.

13-10-2013

23.5

Covered the Direct Frame Buffer BIOS option.

19-10-2013

23.6

Covered the Disable Jitter BIOS option.

26-10-2013

23.7

Covered the Errata 94 Option BIOS option.

03-11-2013

23.8

Covered the Execute Disable Bit BIOS option.

10-11-2013

23.9

Covered the Errata 123 Option BIOS option.

17-11-2013

24.0

Covered the EPP Mode Select BIOS option.

23-11-2013

24.1

Covered the Gate A20 Option BIOS option.

01-12-2013

24.2

Covered the Force 4-Way Interleave BIOS option.

08-12-2013

24.3

Covered the Fast Write-to-Read Turnaround BIOS option.

14-12-2013

24.4

Covered the FSB Spread Spectrum BIOS option.

21-12-2013

24.5

Covered the Force Update ESCD BIOS option.

29-12-2013

24.6

Covered the HPET Mode BIOS option.

05-01-2014

24.7

Covered the N/B Strap CPU As BIOS option.

12-01-2014

24.8

Covered the Dynamic Idle Cycle Counter BIOS option.

19-01-2014

24.9

Covered the Anti-Dot Crawl BIOS option.

26-01-2014

25.0

Covered the IOQD BIOS option.

02-02-2014

25.1

Covered the Hard Disk Pre-Delay BIOS option.

09-02-2014

25.2

Covered the AGP Fast Write BIOS option.

16-02-2014

25.3

Covered the CPU Fast String BIOS option.

23-02-2014

25.4

Covered the CPU L2 Cache ECC Checking BIOS option.

02-03-2014

25.5

Covered the ASF Support BIOS option.

09-03-2014

25.6

Covered the Disable Unused PCI Clock BIOS option.

16-03-2014

25.7

Covered the Athlon 4 SSED Instruction BIOS option.

23-03-2014

25.8

Covered the Read Preamble Time BIOS option.

30-03-2014

25.9

Covered the L1 Data Cache Context Mode BIOS option.

05-04-2014

26.0

Covered the Delay Prior To Thermal BIOS option.

13-04-2014

26.1

Covered the EXT-P2P's Discard Time BIOS option.

20-04-2014

26.2

Covered the Burn-In Mode BIOS option.

27-04-2014

26.3

Covered the Dynamic Counter BIOS option.

05-05-2014

26.4

Covered the Differential Current BIOS option.

11-05-2014

26.5

Covered the Delayed Transaction BIOS option.

18-05-2014

26.6

Covered the ISA 14.318MHz Clock BIOS option.

25-05-2014

26.7

Covered the Hardware Prefetch Queue BIOS option.

01-06-2014

26.8

Covered the Errata 123 Enhancement BIOS option.

08-06-2014

26.9

Covered the MD Driving Strength BIOS option.

15-06-2014

27.0

Covered the Errata 94 Enhancement BIOS option.

22-06-2014

27.1

Covered the Fast R-W Turn Around BIOS option.

29-06-2014

27.2

Covered the Interrupt Mode BIOS option.

06-07-2014

27.3

Covered the SATA Operating Mode BIOS option.

13-07-2014

27.4

Covered the OS/2 Onboard Memory > 64M BIOS option.

20-07-2014

27.5

Covered the AGP Comp. Driving BIOS option.

27-07-2014

27.6

Covered the AGP Aperture Size BIOS option.

03-08-2014

27.7

Covered the ACPI 2.0 Support BIOS option.

10-08-2014

27.8

Covered the IOAPIC Enable BIOS option.

17-08-2014

27.9

Covered the CPU Drive Strength BIOS option.

24-08-2014

28.0

Covered the Boot To OS/2 BIOS option.

01-09-2014

28.1

Covered the Host Burn-in Mode BIOS option.

07-09-2014

28.2

Covered the DRAM Termination BIOS option.

13-09-2014

28.3

Covered the DRAM Refresh Rate BIOS option.

21-09-2014

28.4

Covered the DVMT Memory Size BIOS option.

28-09-2014

28.5

Covered the Host Bus In-Order Queue Depth BIOS option.

05-10-2014

28.6

Covered the 32-Byte Granularity BIOS option.

12-10-2014

28.7

Covered the Idle Cycle Limit BIOS option.

19-10-2014

28.8

Covered the TV Type BIOS option.

26-10-2014

28.9

Covered the AGP Capability BIOS option.

2-11-2014

29.0

Covered the AGPCLK / CPUCLK BIOS option.

9-11-2014

29.1

Covered the AGP Spread Spectrum BIOS option.

16-11-2014

29.2

Covered the Primary VGA BIOS BIOS option.

23-11-2014

29.3

Covered the AGP to DRAM Prefetch BIOS option.

30-11-2014

29.4

Covered the IDE Prefetch Mode BIOS option.

07-12-2014

29.5

Covered the Reset Configuration Data BIOS option.

14-12-2014

29.6

Covered the Max CPUID Value Limit BIOS option.

 
   
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