CPU on our Sony Vaio VGN-SZ220 we've tested was Core Duo T2400 1.83GHz, and on Gateway MX6931 was Core 2 Duo T5500 1.66Ghz.
We've found 15.4" monitor size on MX6931 quite better than 13.3" at Vaio VGN-SZ220.
More RAM memory we've got in Gateway MX6931 - 2GB. Sony Vaio VGN-SZ220 came with 1GB.
2GB is maximum supportable RAM memory on both laptops
Travellers might find Sony Vaio VGN-SZ220 more suitable with its weight of 1.86kg comparing to Gateway MX6931 with its 2.86kg.
Graphic card inside Vaio VGN-SZ220 is Nvidia Go 7400 and other laptop uses Intel 950.
We like that graphic card on Sony Vaio VGN-SZ220 have own video memory (128MB) and therefore its faster since it doesn't use main memory and mainboard controller is less loaded.
Gateway MX6931 had more capacity of hard drive (160GB, comparing to 120GB).
Both laptops have cardreaders.
They don't have DVI for new TFT monitors.
Only MX6931 has TV input.
The lack of webcamera in both models makes them bad in video conferencing.
Both came with XP Media Center operating system on them.
Gateway MX6931 came with Works 8.5, Money 2006 as additional software, and Sony Vaio VGN-SZ220 came with Works 8.5.
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