Both Gateway MX6446 and Gateway MX6455 had Turion64 2.0GHz cpu unit inside.
Screen size on both models(Gateway MX6446 and Gateway MX6455) is 15.4".
RAM memory was on both laptops 1GB.
Both Gateway MX6446 and Gateway MX6455 notebooks have same amount of maximum supportable RAM memory - 2GB.
MX6446 weigths less with its 2.86kg than the another .
Video card inside MX6446 is ATI XPRESS 1150 and other laptop has ATI X300 inside.
Gateway MX6455 laptop uses up to 64MB of main memory for graphic and other up to 128MB.
More hard drive space were at Gateway MX6455 (120GB is contast to 100GB).
Same rotating speed (4200) is declared for their hard drives.
Firewire useful for some video equipment communication is built-in both laptops.
Both models have PCMCIA built-in needed by some TV cards for laptops.
Both laptops have built-in internal modem which you need somewhere where broadband internet isn't available.
Cardreader in both notebooks can read 4 different card types.
Disadvantage of both is lack of DVI output for connection to some modern TFT monitors.
Each notebook has 4 USB ports.
XP Media Center is operating system .
Software which came with both laptops are Works 8.5, Money 2006.
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