Friday, June 10, 2011

Testing the iMac 27 "2.7 GHz Quad Core i5 Part.II

If one compares the first i5 Quad 2.7 GHz 2.5 GHz to previously tested on the iMac 21.5 ", the gains in performance, predictable, are confirmed in almost all applications. There is no exception with Aperture to export the same time. Elsewhere, the differences are sometimes marked. But with Blender (3D), iPhoto, XLD (audio encoding) or Starcraft at native resolution of the screen, the differences are smaller, if not minimal.

- Handbrake: 17 min 22 sec (2.7 GHz) against 19 min 01 s (2.5 GHz)
- Photoshop CS5 test (DHT): 2 min 45 sec instead of 3 min 04 s
- GarageBand: 1 min 32 sec 1 min 41 s cons
- IMovie: 8 min 59 sec instead of 9 min 15 sec
- Finder: 1 min 28 sec instead of 1 min 34 sec
- Stracraft: 65 fps in 1280x800 cons 50 fps

The finding is more vindictive to the very first iMac 27 "Quad. A high-end model features a 2.8 GHz Core i7 released in fall 2009. Our" small "i5 the distance in all cases Figure (some tests fail, we added some applications since then). Faced with the Mac Pro entry level, a Xeon 2.8 GHz Quad, same thing, this iMac is held upright, into the processor and testing Cinebench OpenGL.

- GarageBand: 1 min 32 sec 2 min 14 sec cons for Core i7 Quad 2009
- IMovie: 8 min 59 sec 9 min 27 s cons
- Photoshop CS5 test (DHT): 2 min 45 sec instead of 3 min 04 s
- Photoshop CS5 test (RAT): 42 s instead of 58 s
- Photoshop CS4 test (DHT): 3 min 55 sec instead of 5 min 19 sec
- Photoshop CS4 test (RAT): 45 seconds instead of 1 min 09 s
- QuickTime X: 42 s instead of 58 s

The hard drive is a Western Digital (WD1001FALS-403AA0) to 1 TB 7200 rpm. QuickBench test with large files to an average of 124 MB / s read / write. It's better than the 500GB model fitted to the 21.5 "which is turned around 112 MB / s. All this confirms, if need be, the idea that this family of iMac is perfectly complete semi-professional tasks like 3D, DTP or video or music. In the latter two areas, however, specialists rather demanding swear by the Mac Pro. But for the general public, the iMac 27 "have all the comforts.


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