BIOS settings have a very high performance impact, optimizing the BIOS settings will have some improvement on your overall performance, but there may be some problems at the same time. You can resolve this situation by restoring the BIOS defaults. The following optimization experiences are only from a general standpoint, and the options that really fit you are depending on your specific situation. In short, for BIOS settings, you can try a few more times to improve your machine performance to the best of your ability by constantly optimizing settings.
Do not be afraid to optimize BIOS problems, the BIOS is one of the safest parts for optimization, because you can restore the default settings even if no longer possible. Any settings associated with "optimal performance" will be at the expense of compatibility, which, while improving performance, can also cause problems, so you need to look closely. In addition, any setting with the slow option can be changed to fast or even turbo. As mentioned above, this can also cause problems, but will undoubtedly enhance performance.
BIOS settings, click the DEL key when the system starts (or the key that is prompted on the first screen when you start), the usual prompts are: press DELETE to setup, or other similar sentences. If the BIOS is inaccessible or you cannot access the CMOS settings, you will need to download Tweakbios, which not only makes it easy for you to access the CMOS, but also allows you to access some COMs settings that you previously could not access.
Turbo frequency (Turbo frequency)-increases the clock speed 2.5% to 5%. This setting may cause problems because it may set the CPU clock frequency to exceed the value it can load. On the other hand, if it works properly, it will play a big role in improving the speed of the system. Not all motherboards have this option.
Quick power on self test (post, fast start self-test) -This option speeds up the post (post is performed on your first cold boot system). Turn on this feature to shorten startup time.
CPU Level 1 (L1 cache, also called internal cache, internal cache) -The default value for this feature should be turned on, but some people may have closed it while setting CMOS. Turning on this feature will activate the cache in the CPU, which will greatly reduce the performance of the system, but it will increase the likelihood of overclocking success. I'm sure everyone will turn on this feature.
CPU Level 2 (CPU two cache, also called external cache, external cache) -The default setting for this feature should also be open L2. Turning on this feature activates your external cache. The external cache on the Pentium II processor runs at 1/2 of the clock frequency, while the external cache in Celeron (a) runs at the same rate as the clock frequency. Turning off this feature will greatly reduce the performance of the system, but it will also increase the likelihood of overclocking success. If you really want to be overclocking, and believe that the impact of overclocking is the level two cache, you can turn off the function, or you should still open it. The original Celeron 266 and 300 do not have a level two cache.
DRAM Data Integrity mode-the option allows you to choose between ECC memory and NON-ECC memory. Most computers now use NON-ECC memory, so you should choose the latter.
BIOS cacheable (System BIOS cache, also known as System BIOS shadow, BIOS mask) -This feature copies your main BIOS code into random access memory (RAM), and if this feature is turned on, The performance of the system should be greatly improved. However, this feature can also cause conflicts with some specific video cards or memory. You can try both settings to select the settings that best suit you. If there is no problem opening the feature, it should be turned on because it will definitely enhance the performance of the system.
Video BIOS cacheable -this option is the same as the one above, the only difference is that it is related to the bios of the video card, not the BIOS. If there is no problem, opening the work will generally improve the overall performance of the system. If there is a problem, or if the performance drops, shut it off. Refer to your graphics operation manual and try both settings.
Video RAM cacheable (graphics RAM cache) -turning on this feature will enable the CPU to read cached data from the ram of the video card. Turning on this feature usually improves system performance. As with all other settings, try the two settings and decide which one to choose.
8 bit I/O recovery time (8 bit I/O recovery) -This option sets the time for the 8-bit ISA instruction to wait. Your motherboard should have been set to the default value, increase this value will lengthen the waiting time, reduce this value will shorten the wait time, set the value of 0 or NA will make the wait time is 0, then the performance is optimal, but also may cause some problems.
bit I/O recovery time (16 bit I/O recovery) -This option sets the wait time for the 16-bit ISA directive. As with 8-bit I/o wait times, your motherboard should have been set to the default value, increase this value will lengthen the waiting time, reduce this value will shorten the wait time, set the value of 0 or NA will make the wait time is 0, then the performance is optimal, but also may cause some problems.
AGP aperture size (AGP aperture size) -this item on the motherboard refers to the maximum amount of memory available for use by the AGP video card. The default value may be 64MB. Increasing this value may cause a drop in performance or a significant memory footprint. Try setting this value to 25% to 100% of your memory size, or depending on your graphics operating instructions.
SDRAM ras# to cas# delay, SDRAM precharge time, SDRAM CAS latency -these options vary greatly on different motherboards, so I can't make myself clear here. In general, setting these items to fast or low can help improve system performance, whereas setting slow or higher can degrade performance. These settings will conflict with many kinds of RAM, so you have to be careful.
CPU warning Temperature (CPU warning temperature) -If you have a CPU temperature probe on your motherboard, this option will be available in your CMOS. When you turn on this feature, the system will issue a warning when your CPU reaches the set temperature. This is certainly very useful for all overclocking people.
Virus Warning (virus warning) -This feature doesn't have much to optimize, but it's definitely good to open it. It warns you when the program tries to access the boot sector or file allocation table, which can help you stop the operation when things are not going out of hand. However, this feature can also affect several specific programs, especially when installing. If it causes any negative effects, turn it off.
boot up floppy seek (boot floppy detect) turning on this feature will allow the system to detect the 1.44MB floppy drive at startup, which can cause a delay of about 1-2 seconds, so it should be shut down.
noop (PCI/VGA palette detection) -This feature corrects problems with some graphics cards. Most people should turn off the feature unless your video card asks you to turn it on.
Video BIOS Shadow -This feature stores the basic BIOS functionality of your video card in memory so that it can be easily invoked at all times, allowing the CPU to read these features at a higher speed. Turning on this feature will greatly improve the performance of your system. Of course, if your graphics operation manual requires you to turn off the feature, you should close it.
Shadow C8000-cbfff -these features will "mask" the memory range of some hardware. You should only mask areas where you think you use hardware (such as graphics cards). If you are not sure, you can change these settings and experience changes in system performance before and after the change. This is a setup you have to watch carefully, just like the video BIOS shadow.
Restore the original settings-if your BIOS, motherboard, or (and) CPU optimization is unsuccessful, you can also restore the original system settings at any time. In the BIOS setup, you only have to choose Restore Setup defaults (restore default settings).