How do you calculate fsb

However, the effective speed of memory modules is not the same at the clock rate it actually runs at. It is also worth noting that most DDR modules are backwards compatible within the same family.

If, for example a 1. The front side bus hasn't been one to one with the CPU in a long time. Memory usually runs at a ratio but even this is configurable and changeable on some motherboards. This wikipedia article is a good stating point. There are lots of tech sites with overclocking guides that also go into the relationship between the three clocks. The frequency at which a processor CPU operates is determined by applying a clock multiplier to the front-side bus FSB speed in some cases.

Setting an FSB speed is related directly to the speed grade of memory a system must use. Often, these two buses must operate at the same frequency. Increasing the front-side bus to MHz in most cases also means running the memory at MHz. In newer systems, it is possible to see memory ratios of "" and the like. This is often referred to as an 'asynchronous' system. It is important to realize that due to differences in CPU and system architecture, overall system performance can vary in unexpected ways with different FSB-to-memory ratios.

So if you don't wanna overclock your CPU you want it to run at the original settings like 3 GHz then you need to go and take your FSB speed and calculate it. For example. Now don't forget the CPU ratio, lets say original settings is 9. Thats it and if you want you can set the voltage of your memory which are in the description too of the memorys. Sign up to join this community. The best answers are voted up and rise to the top. For example, in the picture below, you can see that the bus speed is How do I determine my computer bus speed?

Additional information See our concatenate , formula , function , and merge , definitions for further information on each of these terms and related links. Motherboard help and support. Bus help and support. Was this page useful? Originally Posted by thideras. First off, that isn't MHz, it is MHz. A Q will probably only get around 3.

So, if you want your CPU at 3. I agree with what Matt said. You can lower the timings, which effectively does the same thing as upping the MHz. Ram of today is called DDR or Double Data Rate meaning that transfers are made on the rise and fall of register change. Last edited by RGone; at PM. All clear now!

Thanks to everyone that responded. Yeah, Wolfdale was awesome. Yeah, they did pretty horrible in that regard.