How are tRC (Row Command) and tFAW (Four Activate Window) related? The memory SPD has a value for tRC but the BIOS does not; instead it has tFAW. Utilities report tFAW but not tRC.
post #1 of 3
4/5/10 at 7:29am
|-Four Activate Window (tFAW).
Specifies the time window in wich four activates are allowed the same rank.
-Row Cycle Time (tRC).
Determines the minimum number of clock cycles a memory row takes to complete a full cycle, from row activation up to the precharging of
the active row. For optimal performance, use the lowest value you can,
according to the tRC = tRAS + tRP formula. For example:
if your memory module's tRAS is 7 clock cycles and its tRP is 4 clock cycles,
then the row cycle time or tRC should be 11 clock cycles.