The above copied posts will not help you to exceed SP2800 at all. If you are interested, please explain in the supplementary question, so that I will post my own practical overclocking method and my personal experience. I guarantee it will be useful. If If you are trying to score points or believe those rubbish posts above, then I am wasting an opportunity to answer.
If Sempron 2800 is not overclocked, the price/performance ratio is too low. To be honest, the performance of 1.8G is average. Moreover, even if the CPU temperature exceeds 250MHZ FSB, the temperature is only 45 degrees. AMD's official statement is that the CPU is safe within 65 degrees, so you can rest assured and don't be too conservative.
Nowadays, overclocking is no longer a technology patented by experts in the past. Many fool-like overclocking software can achieve "overclocking with one click", which is very suitable for novices to use such as MSI's CORECELL technology, ASUS's AI technology, etc. . These are all overclocking under software control, and have monitoring settings and overclocking amplitude limits, so the stability is very high. If it is not a brand motherboard, you can also use professional overclocking software to complete overclocking. For example, clockgen is a software for overclocking under XP (but the function is too powerful, it is recommended to search for some tutorials before trying to use it).
For novices, it’s actually not a bad idea to try hardware overclocking. I tried to hard overclock the A643000 alone, and it didn’t feel like a big deal. Today’s motherboards have complete protection mechanisms. Once the CPU can’t bear it, it can’t. When the computer is turned on, there will no longer be a situation where the CPU is burned out once the computer is turned on. (But be careful after successfully entering the system. Temperature monitoring is a must. Monitoring software like SPEEDFAN is very good. You can set temperature alarms to prevent the CPU from working at too high temperatures for a long time to ensure the life of the CPU.)
The current method for super-AMD CPUs is to adjust the CPU FSB, but not many are really successful. This is first of all a hardware problem: the CPU and memory should be matched well, and the memory is best equipped with DDR600, but this is not realistic. The price of DDR600 It is more expensive than an ordinary host, and most of them are DDR400. Once the CPU FSB increases, many people do not set up memory asynchronous, and overclocking fails.
The second is the HT bus frequency. HT bus frequency = CPU FSB * HT multiplier. For example, a Sempron 2800 with an FSB of 300MHZ, then the HT multiplier must be set to 2.5, because your Onda N61GHT The maximum frequency is 800MHZ, which cannot be exceeded, otherwise it will be unstable.
Another most critical issue is the CPU overclocking limit. Each CPU has different overclocking limits due to production line problems. There are relatively few that can overclock to a high level. Sempron 2800 is generally good at overclocking to 2G. Better ones are generally 2.4G.
Also note that the power supply of the power supply must be sufficient, at least 250W or more.
In addition, SATA hard drives may cause overclocking failure, so be careful.
As for the specific operation, you can also refer to the introduction of the overclocking part on your motherboard. (There should be, my MSI motherboard has an overclocking manual)
Where did you get the BIOS? Be more detailed. Also, once there is a problem with overclocking, you can unplug the button battery on the motherboard and reinstall it after a while to restore the motherboard's default settings. It’s too late. I’ll send a detailed reply tomorrow~~~Sorry.
The link below is an N61G overclocking forum article, which contains detailed overclocking guidance. Please read it carefully first and then try it slowly!