I know we've had a lot of discussion here lately about TiBooks. I've recently been fortunate enough to acquire two 1ghz TiBooks(the last and best) along with a 400mhz(the first model). I thought I'd throw together a quick thread with comparisons between the beginning and end of the line. I'm not going to focus on raw specs so much, as you all can find those easily enough online. The relevant information, aside from processor speed, is of course that the first generation uses an ATI Rage 128 with 8mb VRAM, while the last generation(at least in 1ghz form) uses a Radeon 9000 with 64mb VRAM. The last generation has 1mb of L3 cache, while the first generation has no L3. My first generation has a DVD-ROM drive-most last generation models have a combo drive(DVD-ROM+CD-RW) although the one I show here has a Superdrive(DVD-R only). Both can accept the same maximum amount of RAM(1gb), although the first generation runs at 100mhz and the last generation at 133mhz. I intend to benchmark both once I get Leopard installed, but for now this is just a comparison of the physical attributes of the systems. From the outside, both look pretty similar(400mhz on left, 1ghz on right) The bottom cover is a little bit different, but again nothing remarkable. The most notable thing to me is that the 400mhz uses Phillips head screws, and the 1ghz uses Torx screws. Again, the back panel looks very similar, aside from the fact that the 400mhz has an IRDA port The most notable difference in the ports is that the 400mhz has a VGA port, while the 1ghz(actually the last two generations) have DVI ports. In addition, although not readily seen, the 400mhz PMU reset button is located next to the S-Video out. The 1ghz has an audio out port in this location. Opening the two up reveals a very similar appearance, but also probably the most striking difference. The later computers have a higher resolution screen. Also, the font used for the "Powerbook G4" text is different on the two models. And, finally, an "under the hood" shot showing that they are fairly similar yet quite different. In light use-at least under OS 9-they are both as fast as I could ask of them. Of course, when the rubber meets the road, the 1ghz is a LOT faster, but either is a decent web browsing or light gaming computer. Both are fun to have around.