Is there a problem with throughput on the Intel Macs?
The reason I ask is because I recently tried playing a 30mbit+ 1024x576 Pixlet movie (lossless compression) on a dual-core iMac and Mini and it choked but the same movie on a quad G5 plays just fine. I don't think it's a CPU problem because the processors weren't going full (though Pixlet decoding maybe isn't multi-threaded).
The iMac is 2x2GHz, the Mini 2x1.66GHz and the G5 4x2.5GHz. I thought maybe Quicktime using just one CPU was the problem because the G5 processors are faster but the iMac was playing back at half the fps. When I encoded the same movie at the same data rate using mp4, the iMac and Mini playback was fine.
Originally I suspected the Pixlet codec but I read about the Intel machines having slower data throughput - I think they have slower fsbs than the G5s. Or could it be the laptop components in the iMac and Mini compared to the desktop ones in the G5?
The iMac is 2x2GHz, the Mini 2x1.66GHz and the G5 4x2.5GHz. I thought maybe Quicktime using just one CPU was the problem because the G5 processors are faster but the iMac was playing back at half the fps. When I encoded the same movie at the same data rate using mp4, the iMac and Mini playback was fine.
Originally I suspected the Pixlet codec but I read about the Intel machines having slower data throughput - I think they have slower fsbs than the G5s. Or could it be the laptop components in the iMac and Mini compared to the desktop ones in the G5?
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