There is likely no carrying into action penalization for using dual - gist processors rather of two exclusive - core processors with the same clock stop number , Macworld Lab has concluded after preliminary testing of the dual - core Power Mac G5s released by Apple a hebdomad ago .
The latest Power Macs ship with dual - core 2.0GHz and 2.3GHz PowerPC G5 processors , as opposed to the two single - core chips in the preceding manakin . Apple also added faster DDR2 RAM and PCI Express art cards to the new theoretical account , interchange DDR computer memory and AGP graphics cards . That change helped the new Power Macs edge past their respective predecessors with similar clock f number .
The double - kernel 2.3GHz Power Mac fared well than a single - core dual - CPU 2.3GHz model in six of our seven tests . In the 7th — MP3 encryption in iTunes 6 — the two-fold - core and single - Congress of Racial Equality 2.3GHz Power Macs turned in matching time .
Our run did n’t let in the Power Mac G5 Quad , which come with two duple - burden 2.5GHz G5 processors . That model is n’t transport yet .
Dual-Core Power Mac G5 Benchmarks
dependable results inbold . Reference organisation initalics .
Speedmark 4 scores are relative to those of a 1.25GHz Mac miniskirt , which is ascribe a grievance of 100 . Adobe Photoshop , Cinema 4D , iMovie , and iTunes scores are in minutes : minute . All systems were running Mac OS X 10.4.2 with 512 megabit of random access memory , with C.P.U. functioning set up to Highest in the Energy Saver pane in System Preferences . We converted 45 transactions of AAC audio files to MP3 using iTunes ’ High Quality setting . We used Unreal Tournament 2004 ’s Antalus Botmatch Average Frames Per Second score tested at a resolution of 1,024 - by-768 pixels at Maximum configurations . The Photoshop Suite test is a Seth of 14 scripted tasks using a 50 Bachelor of Medicine file . Photoshop ’s remembering was set to 70 percent and story was determine to Minimum . To compare Speedmark 4 score for various Mac systems , jaw our Apple Hardware Guide .—Macworld science lab examination by James Galbraith and Jerry Jung
While the two dual - meat systems compare favourably to exclusive - essence Power Macs with like clock speed , neither new model could overcome the break in speed to give the three-fold - C.P.U. 2.7GHz Power Mac G5 any real challenger . The one elision turn out to be in our Unreal Tournament 2004 trial , where the dual - core 2.3GHz auto ’s PCI Express graphics card squeezed out a duet more frames per 2d than the dual - mainframe 2.7GHz G5 did ; the dual - core Power Mac produced ten more frames per 2d than a dual - processor 2.3GHz Power Mac .
The lack of a noticeable performance penalty for dual - heart and soul chip bodes well for the Power Mac G5 Quad , once it becomes available for examination . With its brace of dual - substance processors , it figures to be the fastest Mac desktop ever .
