Linked by Thom Holwerda on Mon 24th Sep 2007 20:01 UTC
Mac OS X Just weeks ahead of its public launch, Apple has updated the minimum system requirements for its next-generation Leopard operating system to exclude 800MHz PowerPC-based Macs, AppleInsider has learned. Apple has yet to officially announce the hardware requirements to run Leopard, due out in October, but had long stated in developer documentation that the software would require "an Intel processor or a PowerPC G4 (800MHz or faster) or G5 processor." According to people familiar with the matter, engineers for the company recently determined that Leopard installs on 800MHz PowerPC G4 systems ran "too slow". Support for those systems was subsequently pulled from the most recent pre-release copies of Leopard, which inform testers that the software "cannot be installed" on those computers. My take: Assuming this turns out to be true, there are going to be a lot of unhappy G4 owners - including yours truly.
Thread beginning with comment 274244
To view parent comment, click here.
To read all comments associated with this story, please click here.
not Flash per se, but H.264/MPEG-4 AVC is the issue
by frik85 on Tue 25th Sep 2007 14:49 UTC in reply to "RE[3]: :("
frik85
Member since:
2006-01-26

Video processing, especially MPEG-4 is very CPU time heavy; you need a 1+ GHz CPU for proper performance.
You won't be able to watch recent Quicktime movies (MPEG4) with Apple Quicktime player either.
MacOS X 10.4 (Tiger) had a 2D UI, 10.5 cames (afaik) with 3D UI like Vista.

Reply Parent Score: 3

Eugenia Member since:
2005-06-28

This is not correct. 320x240 h.264 videos work on cellphones with 250 Mhz ARM CPU, and so they should work on a Cube or my 867 Mhz Powerbook.

Besides, I get the spin of death just for loading normal flash stuff too, not just videos. Flash for the PPC in particular is extremely unoptimized. Nobody is paid to maintain it at Adobe, obviously.

Reply Parent Score: 1

frik85 Member since:
2006-01-26

Cellphones usually have either a special chip for video processing or a special ARM CPU (e.g. iPhone uses one from Samsung) that is optimized for such tasks.

Processing MEPG4 movie is a very complex and CPU hungry task, a 400 MHz general purpose CPU may have troubles even with smaller resolutions.

Additionally, the powerpc port is probably buggy and unmaintained.

Reply Parent Score: 3

asr4096 Member since:
2007-09-18

I also very often getting beachballs when using flash-content on sites, mostly on youtube or other video-sites.
As far as i remember flash performance on Macs was awful, approx 50% the speed of a comparable PC. (Also in the OS9 Days)
I dunno too much about the technical background, but i think OS X so called "advanced" architecture also causes more load and bloat. On the other hand even many animated GIFs causes Safari to use too much CPU. What's that? The "most advanced OS" ever? The most inefficient OS ever?
I also don't know how much overhead is generated by viewing video using flash, i guess a lot. Viewing PAL-sized MPG4 Videos using Mplayer is no problem on my old Mac.
Anyway, I am still using Macs. But i'm no fanboy.

Reply Parent Score: 1

puenktchen Member since:
2007-07-27

MacOS X 10.4 (Tiger) had a 2D UI, 10.5 cames (afaik) with 3D UI like Vista

you're wrong, osx always had an 3d-gui (nextstep & openstep didn't).

Reply Parent Score: 1

n4cer Member since:
2005-07-06

you're wrong, osx always had an 3d-gui (nextstep & openstep didn't).


OS X will not have a GUI pipeline approaching parity with Vista until Leopard is released. It may look like they're doing similar work on the surface, but OS X started with software composition and rendering. They accelerated composition by moving it to the GPU with Quartz Extreme. In Leopard, they will accelerate rendering as well by moving it to the GPU with Quartz 2D Extreme (available, but disabled by default in Tiger). Vista currently accelerates both operations.

http://arstechnica.com/reviews/os/macosx-10-4.ars/13

Reply Parent Score: 2