Basically, SDRAM (Static Dynamic Random Access Memory) is still a standard memory type in computers. It typically runs at about 133Mhz. A newer form of SDRAM (loosely) is DDR, which is faster. These two memory types are found in most systems. If you have a pentium 4, you are probably using RAMBUS memory, which runs at 800Mhz and is dual-channel. It is very fast and very expensive. Most people don't like the public issues with the maker of this memory.
:cool: <font color=blue> Blowing things up smells aweful... </font color=blue>