Forget about Windows Vista. And forget about Windows Vista SP1. Microsoft's latest Windows client has been quite sluggish to begin with. This in both consumer adoption and in terms of the performance it delivers. As the operating system was crawling along, while performing the most common of tasks, even "speed bumps" seemed an integer part of the road's landscape. Right, that was uncalled for... But still, even on its best day, Vista is slow, and the first service pack for the operating system will change nothing in this aspect. Windows XP SP3 simply flies in comparison to Vista, SP1 or no SP1.

Benchmark testing delivered by the researchers at Devil Mountain Software, a software-development company based in Florida, revealed that Windows XP SP3 is twice as fast as Windows Vista, with or without SP1 installed. The company threw the two operating systems one against the other on the following configuration: Dell XPS M1710, 2GHz Core 2 Duo CPU, 1GB of RAM and nVidia GeForce Go 7900GS video. While Vista SP1 delivered minor and disappointing growth in performance, XP SP3 faired quite well.
"Windows XP Service Pack 3 (v.3244) delivers a measurable performance boost to this aging desktop OS. Testing with OfficeBench showed an ~10% performance boost vs. the same configuration running under Windows XP w/Service Pack 2. XP SP3 is shaping-up to be a "must have" update for the majority of users who are still running Redmond's not-so-latest and greatest desktop OS. Of course, none of this bodes well for Vista, which is now more than 2x slower than the most current builds of its older sibling", revealed a member of Devil Mountain Sofware.

Windows XP SP3 finished the OfficeBench test in approximately 35 seconds, XP SP2 went over 40 seconds with Vista RTM and Vista SP1 both exceeding 80 seconds. The company then added another GB of RAM. Moreover, they also tested Vista in tandem with Office 2007 instead of Office 2003. But while Vista dropped under the 80 seconds milestone it still doesn't even come close to the performance of XP. Commenting the benchmarking Microsoft explained that both Vista SP1 and XP SP3 are still under development and as such, not delivering a complete experience. Vista SP1 is currently planned for the first quarter of next year, while XP has been announced by mid 2008.

"By providing Vista (SP1) with an additional 1GB of RAM (that's a total of 2GB for those of you keeping score) we managed to achieve a "whopping" 4% improvement in OfficeBench throughput. Moving from Office 2007 to Office 2003 definitely improved Vista's showing. Instead of being over 2x slower than XP on the same OfficeBench workload, Vista is now "only" 1.8x slower", the Devil Mountain Software added.