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Nehalem Cores vs. Clock Speed: Photography Applications
This test the speed of several photography applications.
Helicon Focus 4.2.1 sees a negligible 4.7% reduction in processing time with the 8-core.
Photoshop CS5 loses ground with the 8-core, taking 7.5% longer with the 8-core; this is related to the clock speed difference.
Photozoom Pro 3.0.10 sees a 44% reduction in processing time with the 8-core, the quad-core takes 77% longer. This is about as good as one ever sees for 4 vs 8 core performance in the Real World. Kudos to the developers here.