Pull-up resistors w/ tracks for DDR2 SDRAM.

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When using pull-up resistors for DDR2 signals, it's important to consider power consumption and the resistor size, with 0402 being a common choice. The impedance matching of tracks connecting resistors to VTT and signals is crucial, and maintaining consistent lengths is recommended to avoid issues. Observing existing PC mainboards can provide guidance on resistor sizing and layout. The presence of "wiggly" lines on these boards is indicative of length adjustments for signal integrity, though their relationship to pull-ups is unclear. Overall, careful attention to resistor specifications and track design is essential for optimal DDR2 performance.
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When pulling up DDR2 signals with resistors, how to decide the power consumption of them, or I can just use 0402 resistors? And for the tracks connecting the resistors to the VTT (or the resistors to the signals), is there a impedance matching problem? Should them be of the same length?
 
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Take a look at a PC mainboard that uses DDR2. The pull-ups are easy to find. Just use the same size as that manufacturer uses. Yes from what I understand length is critical. Again take a look at a PC mainboard, you will see many "wiggly" lines that adjust the lengths. I don't know about impedances though.
 
I thought the wiggly lines are such signals like data and address, but not pull-ups...
 

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