Tweaking Optimizing Windows.pdf - GEGeek

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Note that the shorter delay of 2 cycles works with most DDR DIMMs, even at 133MHz (266MHz DDR). However, DDR DIMMs running beyond 133MHz (266MHz DDR) may need to introduce a delay of 3 cycles between each successive bank activation. Select 2 cycles whenever possible for optimal DDR DRAM performance. Switch to 3 cycles only when there are stability problems with the 2 cycles setting. In mobile devices like laptops however, it would be advisable to use the longer delay of 3 cycles. Doing so limits the current surges that accompany row activations. This reduces the DDR device's power consumption and thermal output, both of which should be of great interest to the road warrior. Shadowing address ranges This feature allows you to cordon off specific memory blocks (xxxx-xxxx) to shadow the BIOS of certain add-on cards. This may improve performance of the card if the BIOS is used to control its functions. Such applications are mostly limited to bootable network cards. In most cases, there's no need for this feature as modern operating systems directly access hardware through drivers. Shadowing will just waste memory. Therefore, it is recommended that you disable this feature. Ryu Connor confirmed this by directing me to the Microsoft article, Shadowing BIOS under WinNT 4.0. According to this article, shadowing the BIOS (irrespective of what BIOS it is) will not bring about any performance enhancements because it is not used by Windows NT. It will only waste memory. Although the article did not say anything about other versions of Microsoft Windows, this is true for all version of Microsoft Windows from Windows 95 onwards. In addition, Ivan Warren warns that if you are using an add-on card which is using the CXXXX-EFFFF area for I/O, shadowing that memory block may prevent the card from working because read or write requests might not be passed to the ISA bus. Super bypass mode This feature basically enables the memory request organizer (MRO) of the memory controller to skip certain pipeline stages when transferring data to and from the memory subsystem. This improves memory performance by allowing low latency accesses to the memory subsystem. However, this feature can only be safely enabled if the following conditions are true :- - The system only has a single processor present. Systems with dual-processor motherboards can also enable this feature if only one processor is present. - The processor clock speed multiplier must be 4 or greater. This means the processor must be running at least four times faster than its bus speed. For better memory performance, it is recommended that you enable this feature. However, you must make sure that you are only using a single processor that is running at least four times faster than the processor bus. You should disable this feature if your system does not meet the two requirements stated above. Super bypass wait state This feature is used to fine-tune the Super Bypass feature to correct for internal timing variations. When enabled, the memory controller forces a wait state delay for all super bypass requests. Official documents recommend that a wait state be added for a 133MHz memory bus (266MHz in DDR SDRAM systems). Systems using a 100MHz memory bus (200MHz in DDR SDRAM systems) do not need this delay. Of course, those are just the safe, official recommendations for this feature. As forcing a wait state on all super bypass requests reduces the effectiveness of the Super Bypass feature, it is recommended that you try using the 0 Cycle setting. It should work even at memory clock speeds greater than 133MHz. But if you start experiencing system stability issues after using this 0 Cycle setting, set this feature to 1 Cycle. This slows down the super bypass transactions but will allow your system to use the Super Bypass feature at higher clock speeds. System bios cacheable This feature is only valid when the motherboard BIOS is shadowed. Since most motherboard manufacturer hardwire the shadowing of the motherboard BIOS, this is really a moot point. Enabling this feature forces the processor's Level 2 cache to cache the motherboard BIOS ROM from F0000h to FFFFFh. This greatly speeds up accesses to the BIOS. However, this does not translate into better system performance because modern operating systems like Microsoft Windows XP do not need to access the motherboard BIOS. Everything can be done much quicker by using drivers to access the hardware directly. As such, it would be a waste of Level 2 cache bandwidth if the motherboard BIOS is cached instead of data that are more critical to the system's performance. In addition, if any errant program writes into this memory area, it will result in a system crash. So, it is highly recommended that you disable this feature for better system performance. Write date in read delay This feature controls the Write Data In to Read Command Delay (tWTR) memory timing. This constitutes the minimum number of clock cycles that must occur between the last valid write operation and the next read command to the same internal bank of the DDR device. Note that this is only applicable for read commands that follow a write operation. Consecutive read operations or writes that follow reads are not affected. With a 1 Cycle delay, a read command that follows a valid write operation will be delayed one clock cycle after the completion of that write command before it is issued. The 2 Cycles option increases the delay to two clock cycles. Generally speaking, the 1 Cycle delay offers faster switching from writes to reads and consequently better read performance. The 2 Cycles delay reduces read performance slightly but it will improve stability, especially at higher clock speeds. It may also allow the memory chips to clock higher. In other words, increasing this delay (as well as other memory timings) may allow you to overclock the module higher than is normally possible. The default is 2 Cycles but it is recommended that you use the 1 Cycle delay if possible for better memory read performance. But if you face stability issues, increasing this delay to 2 Cycles is one of the steps you should try. Write recovery time This feature controls the tWR memory timing which determines the minimum number of clock cycles that must occur before a precharge command can be asserted to the bank after the completion of a valid write operation to the same bank. In other words, it specifies the amount of delay (in clock cycles) that must occur between a write command and a subsequent precharge command to the same internal bank. Please note that it does not determine the time it takes for the bank to precharge. This feature only controls how soon the bank can start precharging right after a write operation to the same internal bank.
The shorter the delay, the earlier the bank can be precharged for another read/write operation. This improves performance and allows faster cycling times. Contrary to other memory timings, a shorter delay here may improve the overclockability of the memory module as it allows faster cycling times. The default value is 2 Cycles but it is recommended that you use the 1 Cycle delay for better memory read performance as well as increased overclockability. MISCELLANEOUS Anti virus protection The Anti-Virus Protection feature is actually an enhanced version of the Virus Warning feature. Besides the standard boot sector or partition table protection, this BIOS feature also offers more comprehensive anti-virus protection via built-in rule-based anti-virus code like ChipAway. When you enable this feature, the BIOS will halt the system and flash a warning message whenever there's an attempt to write to the boot sector or the partition table. Note that this only protects the boot sector and the partition table, not the entire hard disk. This feature can cause problems with software that need to access the boot sector. One good example is the installation routine of all versions of Microsoft Windows from Windows 95 onwards. When enabled, this feature causes the installation routine to fail. Also, many disk diagnostic utilities that access the boot sector can also trigger the system halt and error message as well. Therefore, you should disable this feature before running such software. Alternatively, you can select the internal rule-based anti-virus code. The software used in the reference motherboard is called ChipAway. Enabling ChipAway provides better anti-virus protection by scanning for and detecting boot viruses before they have a chance to infect the boot sector of any hard disk. Note that this feature is useless for hard disks that run on external controllers with their own BIOS. Boot sector viruses will bypass the system BIOS with its anti-virus protection features and write directly to the hard disks. Such controllers include additional IDE or SCSI controllers that are either built into the motherboard or available via add-on cards. I recommend disabling this. Flash bios protection One frustrating problem faced by many users and motherboard manufacturers is the corruption of the BIOS by viruses or failed BIOS updates. This has been a problem since motherboards started shipping with Flash BIOS ROMs instead of static BIOS ROMs. Because such an issue could potentially mean high numbers of really needless RMAs, many manufacturers now write-protect the BIOS code and only allow write access to the Flash ROM when the user specifically toggles a switch. The switch can be physical like a jumper or DIP switch or it can be a software toggle like a BIOS feature. The Flash BIOS Protection feature is a software toggle that controls write access to the BIOS. When it is enabled, the BIOS code is write-protected and cannot be changed. This protects it from any attempt to modify it, including BIOS updates and virus attacks. Therefore, if you intend to update the BIOS, you'll need to disable this feature first. It is highly recommended that you enable this feature at all times. You should only disable it when you intend to update the BIOS. After updating the BIOS, you should immediately re-enable it to protect the BIOS against viruses. Hardware reset protect This BIOS feature is very useful for file servers and routers that need to be running 24 hours a day, 365 days a year. When it is enabled, the hardware reset button will be disabled. This prevents the possibility of any accidental resets. When disabled, the reset button will function as normal. If you are running a mission-critical server or have kids who just love to press little red buttons, it is highly recommended that you enable this feature. Otherwise, it is really up to your preference. Naturally, people using buggy operating systems or applications are advised to keep this feature disabled for more convenient reboots. Heheh... KBC input clock protect The PS/2 keyboard communicates with the keyboard controller on the motherboard via a serial data link. The speed of the data link depends on the clock signal generated by the keyboard controller. The higher the clock speed, the faster the keyboard interface. This translates into a more responsive keyboard although not all keyboards can be overclocked. This feature allows you to adjust the keyboard interface clock for better response or to fix a keyboard problem. It is recommended that you select the 16MHz option for a better keyboard response. But if the keyboard performs erratically or fails to initialize, try a lower clock speed to fix the problem. Onboard IR function This feature is usually found under the Onboard Serial Port 2 option. It will only appear if the second serial port is enabled. This is because it is slaved to the second serial port. There are two different IR (Infra-Red) modes - IrDA and ASK IR. Select the IR mode that is supported by the external IR device. Choosing the wrong IR mode will prevent your computer from communicating with the external IR device. Please note that this feature requires an IR beam kit to be plugged into the IR header on the motherboard. Without the IR beam kit, enabling this feature won't have any effect. Also, enabling the IR function prevents the second serial port from being used by normal serial devices. So, if you do not need to use the onboard IR function, disable this feature to allow the second serial port to be used for other purposes. Power on function This feature allows you to set the method by which your system can be turned on. Normally, it is set as Button Only so that your system will only start up if you press the casing's power button or switch. Other options including starting up the system using the keyboard (if it supports the Keyboard 98 standard), a keyboard hot key (for other standard keyboards) or the mouse. Please note that only PS/2 mice support the Mouse Left or Mouse Right options. Mice using serial or USB connections do not support this power on function. However, some PS/2 mice may not be able to support this function due to compatibility problems (read : bugs, design flaws). If you select, the Mouse Left option, the left button of the mouse will be used to start up the system. The Mouse Right option selects the right mouse button as the power on button instead. The Keyboard 98 option will only work if you have installed Windows 98 (or better) and you have the appropriate keyboard. Then you can use the keyboard's wake-up key to start up the system.
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Mr.X.'s TWEAKING AND OPTIMIZING WIN
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-Msdownld.tmp This one needs manual
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If you have Windows 95/NT you can e
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BootKeys=1 BootMenu=0 BootMenuDefau
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Settings\Cache\History] "CachePath"
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Similarly, open Internet Explorer,
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g - Restart your computer once step
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38. Keep IE crash free Here's a tip
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44. Switch off Dos memory manager D
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Data: D:\WIN95 58. Clear Recent Doc
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Click on the property tab for this
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Right-click in the right hand pane
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By the use of this client software,
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8. Want Real mode DOS back in Windo
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Recommendation: This service will f
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detect and/or recognize your hardwa
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It should almost certainly benefit
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Click start. click settings. click
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Click Analyze, click ok, click Acti
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Nonbrowser. A nonbrowser is configu
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Private IP Addressing (APIPA) for p
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provides protected storage for sens
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If the service is turned off, RIS i
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enables NetBIOS name resolution. Pr
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11. Adaptive Menus Microsoft Office
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3. Speed up Internet Explorer 6 Fav
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Note that in doing this, you are co
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claimed for a ‘fixed’ page file
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When a NTFS drive is formatted it b
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Goto above key in registry and you
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To get Admin account on the "Welcom
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Page 109 and 110: Therefore, using the latest video B
Page 111 and 112: So, for optimal performance, you sh
Page 113 and 114: second clock cycle before sending t
Page 115: SDRam RAS precharge time This featu
Page 119 and 120: CPU level 1 cache The modern proces
Page 121 and 122: MPS 1.1 was the original specificat
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