Performance
Initial performance tests have demonstrated that Windows XP outperforms Vista in several productivity areas. File copy operations are speculated to be one area where Vista performs better than XP. In a test run by CRN Test Center, a 1.25 GB file was copied from a network share to each desktop. For XP, it took 2 minutes and 54 seconds, for Vista with SP1 it took 2 minutes and 29 seconds. The Vista implementation of the file copy is arguably more complete and correct as the file does not register as being transferred until it has completely transferred; in Windows XP, the file completed dialogue box is displayed prior to the file actually finishing its copy or transfer, with the file completing after the dialogue is displayed. This can cause an issue if the storage device is ejected prior to the file being successfully transferred or copied in Windows XP due to the dialogue box's premature prompt.
Another test was performed by Tom's Hardware in January 2007. Applications such as Unreal Tournament 2004 and the graphics benchmarking suite SPECviewperf 9.03 suffered heavily from the lack of support for the OpenGL graphics library under Vista. They reached the conclusion that Windows Vista clearly is not a great new performer when it comes to executing single applications at maximum speed. On the other hand, they did not find evidence that Windows Vista's Desktop Window Manager consumes more energy than Windows XP's window manager. All of the tests were performed on a computer with an 2.93 GHz Intel Core 2 Extreme X6800 processor, 2x 1024 MB DDR2-800 RAM, HIS Radeon X1900XTX IceQ3 graphics card, 150 GB Western Digital WD1500ADFD hard drive and a Gigabyte GA-965P-DQ6 motherboard.
Read more about this topic: Comparison Of Windows Vista And Windows XP
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