Hi, I just bought a Inspiron 6000D with IntelĀ® PentiumĀ® M Processor 715 (1.50 GHz/2MB Cache/400MHz FSB) and want to upgrade memory. Just noticed that newegg has 1GB DDR2 533Mhz (PC2 4200) for 132$. But my D6000's FSB is 400Mhz,...