Apple has now posted a Compatibility Checker on its website, which checks your system's specifications and determines if Apple's new flagship photography application Aperture will run on your system.
Much to my surprise, my (July 2005) iBook is supported:
Although this iBook's 1.33 GHz G4 meets the minimum CPU speed requirements and its Radeon 9550 does include the hardware (Core Image) video features necessary for Aperture, this GPU is not listed as supported on Apple's Aperture tech specs page. Furthermore, the page states that only 15" and 17" PowerBooks are supported. That G4 PowerBook (or G5 desktop) requirement is echoed by the Compatibility Checker when run on unsupported machines (like my 1.7 GHz G4 Cube with GeForce2 MX):
Assuming the Compatibility Checker is correct and Aperture will run on the iBook, the small 1024x768 screen resolution, the relatively slow 1.33 GHz CPU, the slow Radeon 9550 GPU, and the anemic 32 MB GPU RAM will surely make Aperture on the iBook a less than ideal experience. Still, I am pleased. Being able to run it slowly is better than not being able to run it at all.
One wonders if 12" PowerBooks with the GeForce FX Go5200 or G5 iMacs (and G5 Power Macs) with the GeForce FX 5200 Ultra are also supported. The GPUs in these machines are also compatible with the hardware video features required by Aperture, although they are not listed on the Aperture tech specs page either, and they are even slower than the Radeon 9550. I also wonder if some G4 Power Macs are supported. The more recent G4 Power Macs have fast enough CPUs and some may be running reasonably fast Core Image compatible GPUs as well, but Apple makes no mention whatsoever of supporting G4 Power Macs with Aperture.