Date	Model	kg	MHz	MB	X×Y
1993	Psion 3a	.2	7	.5	480×160
6/2002	Fujitsu Siemens S-4572	1.7	750	256	1024×768
9/2005	Dell X1	1.1	1,100	1,280	1280×768
11/2009	Sony VGN-Z41WD	1.5	2×2,800 = 5,600	6,144	1600×900