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10.4: A quick look at Rosetta memory requirements Apps
I did some simple testing of the memory needed to run applications under Rosetta versus being run as a native binary. Follow the previous link to my website for the full details but in short applications running under Rosetta can take anywhere from 1.5 to 3.8 times the memory of native/Universal Binary applications.

So the tip is ... if you're planning on getting a new Intel Mac, and want to run applications under Rosetta, make sure you load the machine up with RAM -- even more so than normal, it seems.
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10.4: A quick look at Rosetta memory requirements | 4 comments | Create New Account
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10.4: A quick look at Rosetta memory requirements
Authored by: solipsism on Jan 30, '06 08:15:59AM

The additional memory requirements were expecteed.

I was informed that the increase performance over the PPC iMacs means some applications using Rosetta will actually run faster. Have you done any testing that substantiates this claim?



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10.4: A quick look at Rosetta memory requirements
Authored by: Anonymous on Jan 30, '06 08:28:23AM

I have not done any formal benchmarks but Epson's Film Factory 3 seems to actually run faster emulated on the Intel iMac than native on my old PowerMac G4 dual 1.25 (after the initial launch delay).

The biggest endorsement I can give to the new iMac is that I have not booted up my old PowerMac since I copied over all my files and settings.

I would strongly suggest not getting any less than 1GB of RAM, in the future when everything is Universal 512MB may work. I have 1GB currently and will probably add another 512MB or 1GB in the near future.



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10.4: A quick look at Rosetta memory requirements
Authored by: 199cm on Feb 01, '06 01:18:57AM

I would say - you need 2.5Gb RAM for a Mac with OSX. I'm working yet with 1Gb and it is absolutely not enough.



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10.4: A quick look at Rosetta memory requirements
Authored by: adrianm on May 02, '06 05:18:52AM

Surely that depends on what you're doing?

768mb in my ibook is absolutely fine as all I use it for is email/surfing and occasionally vnc.

1gb in the intel mini is absolutely fine as all it use it for is a frontrow media player and occasionally running solaris in parallels workstation.

2.5gb in my dual g5 is woefully inadequate when i'm dealing with large data sets exceeding 10gb... paging all over the place.

The only thing for certain is that 256mb is almost universally too small. 512mb is prob about ok for simple stuff like surfing, and 1gb is a comfortable minimum for doing lots of work with photos or running virtual pcs.



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