Both models came with Core 2 Duo T5600 1.83GHz processor.
Both Vaio VGN-FE770G and Vaio VGN-FE31Z have 15.4" screen size.
The same on both laptops is maximum screen resolution - 1280x800.
More RAM on Sony Vaio VGN-FE31Z means less swapping on hard drive. Vaio VGN-FE31Z had 2GB. Sony Vaio VGN-FE770G had only 1GB of RAM which might not suit users who wants to run many programs at once.
On both laptops in use is DDR2 memory.
We could say that Sony Vaio VGN-FE770G is less in weight with 2.8kg, comparing to 2.82kg which .
Graphic is built around Intel 950 on Vaio VGN-FE770G, but graphic on other laptop is built using Nvidia Go 7600.
Sony Vaio VGN-FE31Z had more capacity of hard drive (200GB, comparing to 120GB).
Fast hard disk (5400 rpm) on Sony Vaio VGN-FE31Z beats another model.
For some devices like mobile phones and cameras, you might need bluetooth communication which initially contains in only in Sony Vaio VGN-FE31Z.
Sony Vaio VGN-FE770G doesn't have infrared .
Both laptops have firewire which some camcorders use.
These laptops have PCMCIA.
For some rare location without proper Internet connection, you might need modem which is available in both laptops in this rating.
Cardreaders are inside both of these notebooks.
None has DVI output so you cannot connect them to some new LCD monitors.
Only Vaio VGN-FE770G has TV output.
Each notebook has 3 USB ports.
Only Sony Vaio VGN-FE31Z has web camera useful for video conferencing.
Operating system is XP Media Center .
Software which came with Sony Vaio VGN-FE31Z is Adobe Acrobat Elements 7.0, Works, Photshop Elements, DV Gate Plus, WinDVD, Roxio Digital Media SE7, Norton Internet Security 2006, Skype 2,0 and with Sony Vaio VGN-FE31Z is Works 8.5.
More
Laptops comparisons:
Gateway MX6448 vs Asus Z 9266 VA.
Asus Z5303JC vs Toshiba Satellite P105-S9722.
Sony Vaio VGN-FE770G vs HP Compaq nx8220.
Sony Vaio VGN-AR230G vs Toshiba Satellite M60-182.
Sony Vaio VGN-FE770G vs Sony Vaio VGN-FS980.
Sony Vaio VGN-FE31Z vs Toshiba Satellite P105-S9722.
Sony Vaio VGN-FE660G vs Acer TravelMate 2414NWLMi.
Acer Aspire 3681WXMI vs BenQ R23.G13.
Toshiba Satellite A105-S4384 vs Toshiba Satellite L100-1200.
Sony Vaio VGN-AR230G vs BenQ S53W.G01.
BenQ S53W.G01 vs Samsung X11-T5500 CeSeba.
Sony Vaio VGN-FE31Z vs Toshiba Satellite L100-1200.
Sony Vaio VGN-FE660G vs HP dv9008nr.