對ddr2/ddr3記憶體來說,幾個建議為write to precharge delay 及 write to read delay 的參數
CAS latency :3 >write to precharge delay 8~9 TWTR:8~9
CAS latency :4 >write to precharge delay 10~11 TWTR:9~10
CAS latency :5 >write to precharge delay 10~13 TWTR:10~11
CAS latency :6~9 >write to precharge delay 10~14 TWTR:10~11