Snow Leopard also shaved a few seconds off the time to scroll through a large PDF document in Preview and opening a large Word document in Pages. Importing 150 photos from the hard drive into iPhoto, the iMac was nearly 8 percent faster under Snow Leopard, the MacBook Pro improved 11 percent, and the Mac Pro knocked a full 21 percent off the time it took compared to Leopard. Zipping a 2GB folder in the Finder was 6.5 percent faster on the iMac, 8 percent faster on the MacBook Pro and 11 percent faster on the Mac Pro. mov file using Apple’s H.264 for Video Podcasting presets, was 2 percent faster on our iMac and MacBook Pro and 4.5 percent faster on our Mac Pro when running Snow Leopard than when running Leopard. Our Compressor test, which involves encoding a. But laptop users who find themselves tapping their toes waiting for shut-down should take notice: Snow Leopard took half as much time as Leopard to turn off our MacBook Pro, 3 seconds versus 6 seconds. For people using a desktop Mac, that difference may seem trivial. On our iMac and Mac Pro, it took 7 seconds to shut down when running Leopard, but only 4 seconds when running Snow Leopard. Snow Leopard was also faster than Leopard during shutdown. Of course some of that performance benefit is due to Snow Leopard’s smaller hard drive footprint – the iMac, for instance was backing up approximately 27GB worth of files under Snow Leopard, while Leopard’s files and folders took up around 34GB of disk space. Snow Leopard was, on average, 32 percent faster with Time Machine backups across the three systems. For example, an initial Time Machine backup to an external FireWire 800 hard drive was between 10 and 15 minutes faster in Snow Leopard. ![]() The good news is that, of the 16 tests we ran, eight were indeed faster under Snow Leopard compared to Leopard. We booted into one OS, timed different tasks, then rebooted into the other OS and clocked those same tasks. The hard drives in each system were partitioned into two equal sizes, and we installed Leopard (OS 10.5.8) on one partition and Snow Leopard (OS 10.6) on the other. ![]() To check the performance benefits, we tested Snow Leopard on three different systems: a 20-inch iMac Core 2 Duo/2.66GHz ( ) with 2GB of RAM a 3GHz Xeon 5300 eight-core Mac Pro with 4GB of RAM (this Mac Pro was released in April 2007) and a 15-inch MacBook Pro Core 2 Duo/2.8GHz ( ) with 4GB of RAM.
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