What is the system crystal that sets the system bus clock and CPU clock?
If you up the system crystal on the motherboard? Like the clock cycles?
I really confused about the bus speed , CPU speed ? And what the system crystal does?
How can you change the bus speed or CPU speed to get higher GHz?What is the system crystal on the main board?The crystal is a piece of quartz mounted in a small metal can the size of a bug. It does a curious thing... it vibrates electrically at a speed proportional to it's size. The tiny tiny electrical signal is amplified by an integrated circuit (IC), which uses it as the basis to generate a whole set of computer level voltages, each one going on and off at different speeds. The IC chip is usually designed to use a crystal of a specific speed, and in this way it can accurately (or as accurately as the tolerance of the crystal) generate the clock signals used by a computer.
This is also why some watches are more expensive than others, good watches use a crystal with a tighter tolerance, which is more expensive to produce.
You really don't want to change this crystal on your computer board unless you really, really know what you are doing (like you built the board from a kit). The chip which generates the clock signals can be changed programmatically to generate different speeds, so the crystal itself doesn't change... the way the crystal's base frequency is multiplied changes.
The multiplier is usually set automatically by the BIOS when the computer starts, but you can 'overclock' your system by forcing this multiplier higher. I strongly recommend you don't do this... instead of getting a faster computer, you'll burn out the slow one you won't have anymore when you have to buy a faster one anyway. If your CPU could take the extra speed, they would have already sold it with that rating.What is the system crystal on the main board?I guess you are talking about the clock, a microchip that controls the timing and the speed of all the computer's functions. that chip includes a crystal which vibrates at a certain frequency when electricity is applied to it.
The Front Side Bus (FSB) is the connection between the CPU and system memory.
The Front Side Bus operates at a speed which is a percentage of the CPU clock speed.
The faster the speed at which the Front Side Bus allows data transfer, the better the performance of the CPU.
CPU speed is measure in megahertz. A 1MHz CPU can accomplish one million CPU cycles in one second.
Does this mean that a 2MHz CPU is twice as fast as a 1Mhz CPU?
Not necessarily. This depends on how much work each CPU accomplishes in each clock cycle.
The 1MHz CPU might very well be faster, in practice, than the 2Mhz CPU - if it is more efficient or can process more tasks in each CPU cycle.
The purpose of a cache is to enable the CPU to access recently used information very quickly.
Cache: A cache will significantly affect CPU performance.
Some caches are bigger than others. A typical L1 cache is 256Kb and a typical L2 cache is 1MB.
Generally speaking, the larger the cache, the better the system performance boost.
RAM has an access speed. Faster RAM will mean the CPU has to wait less often for data. This will, effectively, make the CPU faster.
To overclock you can make changes in the Bios.
Each of these topics is a study in itself, Read your manual or try Googling your motherboard for detailed information.
