EDO RAM eliminates wait states by buffering output. EDO RAM improves on the performance of FPM RAM by between 10 percent and 15 percent. But subsequent, contiguous characters are accessed five to six times faster than was the first character. The future of Direct Rambus, however, may not be as rosy as Intel would like. The difference lies in how the pins are wired.
SIMM pins have the same circuit path on both sides of the edge connector.
DIMM pins, which are different on each side, improve performance over SIMMs by providing double the circuit paths. Buying the newest, fastest memory module won't help performance if the chips it contains are faulty. Fortunately, most chips are developed under strict manufacturing guidelines and are free from faults. Still, it's safest to check that your chip came from a major manufacturer. Although most chips leave the factory defect-free, the longer it takes them to be used in a memory module and the more hands they pass through, the more likely it is that they'll be damaged.