Despite have a somewhat slower central processor than its precursor , Apple ’s new 17 - inch 1.9GHz iMac G5 wangle to keep rate with a 2.0GHz iMac G5 , Macworld research laboratory testing has receive . Credit for the new iMac ’s strong display goes to the other under - the - hoodlum melioration , including fast RAM and higher - performance nontextual matter .

Apple updated its iMac line earlier this calendar month , introducing the 17 - column inch , 1.9GHz mannequin along with a 20 - inch 2.1GHz machine . Both new background are the first iMacs to ship with DDR2 RAM , a loyal eccentric of memory than what antecedently came installed in iMac model . The renovate iMacs also became the first Macintosh models to have PCI Express computer graphic , a grow standard on the microcomputer side . PCI Express provide faster functioning for art systems than the AGP port on previous Mac - compatible artwork cards .

Those improvements keep back the 1.9GHz iMac G5 within a second or two of the formerly top - of - the - line iMac , despite that exemplar ’s nominally fast 2.0GHz PowerPC G5 processor . ( Our tests did not include the new 2.1GHz iMac G5 , which is not yet widely useable . )

17-inch 1.9GHz iMac Tested

good result inbold . Reference system initalics .

Speedmark 4 scores are relative to those of a 1.25GHz Mac mini , which is assigned a score of 100 . Adobe Photoshop , Cinema 4D XL , iMovie , and iTunes scores are in minutes : second . All organization were race Mac OS X 10.4.2 with 512 MB of RAM , with processor performance set to Highest in the Energy Saver taste pane . We convert 45 minutes of AAC audio Indian file to MP3 using iTunes ’ High Quality setting . We used Unreal Tournament 2004 ’s Antalus Botmatch mean - skeleton - per - second score ; we try out at a resolution of 1,024 by 768 pixels at the Maximum setting . The Photoshop Suite test is a set of 14 scripted tasks using a 50 Bachelor of Medicine data file . Photoshop ’s memory was set to 70 percent and History was set to Minimum . To compare Speedmark 4 scores for various Mac systems , visit our Apple Hardware Guide .—Macworld research laboratory examination by James Galbraith and Jerry Jung

The fresh 1.9GHz iMac topped the old 2.0GHz example in four of our seven tests ; the old desktop came out on top in two exam , with both iMacs recording matching Speedmark score . Of particular interestingness was the Unreal Tournament 2004 test , in which the 1.9GHz example ’s PCI express scorecard was capable to agitate 10 percent more material body per second than the 2.0GHz iMac .

Macworldwill soon have a full review of the novel iMacs , including benchmark termination for the 20 - in 2.1GHz iMac G5 .