Central processor unit in Gateway MX6448 is Turion X2 Dual 1.6GHz, and in notebook Fujitsu-Siemens Amilo Xi 1546 is Core Duo T2400 1.83GHz.
Screen size on Fujitsu-Siemens Amilo Xi 1546 is larger, 17 comparing to 15.4 on Gateway MX6448.
More RAM means less swapping when you run many programs at once and therefore Fujitsu-Siemens Amilo Xi 1546 with 2GB RAM is better choise than Gateway MX6448 with 1GB.
With maximum 2GB of RAM it can support Gateway MX6448 can feel a bit more proud than Fujitsu-Siemens Amilo Xi 1546.
Graphic card inside MX6448 is ATI XPRESS 1150 and other laptop uses ATI Mobility X1800.
Graphic card is better on Fujitsu-Siemens Amilo Xi 1546 with embedded 256MB of memory.
More storage for multimedia (mpeg, avi) were available at Gateway MX6448 (more space on hard disk).
If you need bluetooth don't forget that it is available only at Fujitsu-Siemens Amilo Xi 1546 laptop.
Only Gateway MX6448 have firewire.
PCMCIA is available only on Gateway MX6448 and it is needed by some TV cards and external modems.
Only Fujitsu-Siemens Amilo Xi 1546 supports fast internet (1Gbit/s).
These notebooks have cardreaders inside them.
It is bad that these laptops cannot be connected to some new LCD monitors since they don't have DVI.
The lack of webcamera in both models makes them bad in video conferencing.
Only Gateway MX6448 has some additional software : Works 8.5, Money 2006.
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