Memory Clock (100/ 133/ 166/ 200 MHz) (DRAM Clock) (1:1 DRAM:FSB)
Specifies the clock speed of the memory bus. This rate is normally specified relative to the front-side bus (FSB) clock. DDR technology (double-data rate) doubles the data rate given by the actual bus clock speed.
Note: On AMD XP systems, often the best results are obtained with a 1:1 ratio with your FSB frequency. eg. CPU FSB 166Mhz(333):Ram clock 166Mhz (pc 2700 ram). Running a faster memory clock speed than your FSB speed can reduce performance. Instead, you'll probably get better results from optimizing the timing parameters. Use a Memory Diagnostic or Benchmarking application to find the best solution for your system.